exploration in fold and thrust belts a personal perspective 2012 newsletter.pdf · after two years...

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Volume 42 Number 7 March 2012 Page 1 AGS Luncheon Date & Time: March. 15 th , 11:30 am 1:00 pm Program: Fold and Thrust Belts Speaker(s): Rod Graham AAPG Distinguished Lecturer Place: BP Energy Center Reservations: Please make your reservation before noon Tuesday, March. 13 th , 2012. Cost: Seminar only, no meal: Free Reserve a box lunch: $15 Reserve a hot lunch: $20 Lunch with no reservation: On an as-available basis only E-mail reservations: [email protected] Or phone (907) 644-4429 For more information: visit the AGS website: www.alaskageology.org Rod Graham AAPG Distinguished Lecturer Research Associate, University of Cambridge Twenty-odd years ago we saw fold and thrust belts as part of a 'new geography', sitting alongside the then unexplored deep water continental margins, the Arctic and the liberalizing Soviet Union as likely areas to deliver significant new hydrocarbon resources. Since then we have seen political and practical difficulties in many of the countries of the FSSU, and much of the Arctic is only just beginning to get into gear. The deep water passive margins - or at least the inboard, extension dominated parts of them - have delivered abundantly, dwarfing the contribution from the onshore fold and thrust belts. Now, though, these margins are themselves becoming mature, or difficult or expensive to access, and we may need to look again at fold and thrust belts. Most of us find them exiting. The structures can be large and have the capacity to deliver large volumes of hydrocarbons, but there are also major exploration challenges, which I will try to discuss in this talk. Fold and thrust belts are geometrically complex, but generally have to be worked with seismic data which are expensive to acquire and often not of the best quality. Even when the pre-requisites of source, reservoir and seal are working in one's favor, the relationship between hydrocarbon maturation, migration and charge with the developing structures is common uncertain. Essentially this is because fold and onshore thrust belts elevate rocks which were once more deeply buried, with consequent damage to the elements of their hydrocarbon systems. It takes a special combination of circumstances to keep a thrust- related structure at maximum burial depth or ensure that structures are developed in time to receive matured and migrated hydrocarbons. Such things happen spectacularly well in the Zagros where over 200 bboe has been discovered almost equal to the rest of the world's discovered fold and thrust belt resource, but for many other areas, problems can outweigh advantages. Burial, age and structural simplicity are important issues which we need to work in our favor, and often don't. Exploration in Fold and Thrust Belts A Personal Perspective

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Page 1: Exploration in Fold and Thrust Belts A Personal Perspective 2012 Newsletter.pdf · After two years of post doctoral work on geological strain in crystalline rocks he took up a lectureship

Volume 42 Number 7 March 2012 Page 1

AGS Luncheon

Date & Time: March. 15th, 11:30 am 1:00 pm

Program: Fold and Thrust Belts

Speaker(s): Rod Graham AAPG Distinguished Lecturer

Place: BP Energy Center Reservations: Please make your reservation before noon Tuesday, March. 13th, 2012.

Cost: Seminar only, no meal: Free

Reserve a box lunch: $15

Reserve a hot lunch: $20

Lunch with no reservation: On an as-available basis only

E-mail reservations: [email protected]

Or phone (907) 644-4429

For more information: visit the AGS website:

www.alaskageology.org

Rod Graham AAPG Distinguished Lecturer

Research Associate, University of Cambridge

Twenty-odd years ago we saw fold and thrust belts as part of a 'new geography', sitting alongside the then unexplored deep water continental margins, the Arctic and the liberalizing Soviet Union as likely areas to deliver significant new hydrocarbon resources. Since then we have seen political and practical difficulties in many of the countries of the FSSU, and much of the Arctic is only just beginning to get into gear. The deep water passive margins - or at least the inboard, extension dominated parts of them - have delivered abundantly, dwarfing the contribution from the onshore fold and thrust belts. Now, though, these margins are themselves becoming mature, or difficult or expensive to access, and we may need to look again at fold and thrust belts.

Most of us find them exiting. The structures can be large and have the capacity to deliver large volumes of hydrocarbons, but there are also major exploration challenges, which I will try to discuss in this talk.

Fold and thrust belts are geometrically complex, but generally have to be worked with seismic data which are expensive to acquire and often not of the best quality. Even when the pre-requisites of source, reservoir and seal are working in one's favor, the relationship between hydrocarbon maturation, migration and charge with the developing structures is common uncertain. Essentially this is because fold and onshore thrust belts elevate rocks which were once more deeply buried, with consequent damage to the elements of their hydrocarbon systems. It takes a special combination of circumstances to keep a thrust-related structure at maximum burial depth or ensure that structures are developed in time to receive matured and migrated hydrocarbons. Such things

happen spectacularly well in the Zagros where over 200 bboe has been discovered

almost equal to the rest of the world's discovered fold and thrust belt resource, but for many other areas, problems can outweigh advantages. Burial, age and structural simplicity are important issues which we need to work in our favor, and often don't.

Exploration in Fold and Thrust Belts

A Personal Perspective

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Volume 42 Number 7 March 2012 Page 2

Petroleum system uncertainties can be addressed by modeling, of course and I will cite an example of a how an integrated dynamic model helped an exploration decision to be made on the fold and thrust belt which forms the eastern margin of the Middle Magdalena Valley of Colombia.

Some of the problems associated with onshore fold and thrust belts are minimized in the toe folds of gravitation systems on the continental margins. They are commonly at maximum burial depth, and the high quality of (relatively cheap) modern marine 3-D

seismic data potentially overcomes the imaging problems associated with the onshore, bringing proper structural understanding within reach. Despite this "imaging advantage", exploration success in toe-fold systems has been modest by comparison to that in the more proximal areas of the same deep water plays. Why? I will argue that it is not entirely a technological issue. Exploration of the world's toe-fold zones exposes us to a different set of geological risks from their onshore counterparts, but they are still significant risks. Two or three prospective and potentially prospective gravitational systems are described in order to illustrate this point.

About the Speaker: Like many other geologists Rod Graham was attracted to geology by a love of mountain walking, and an inspirational school teacher. He studied Geology in the University of Wales at Aberystwyth, graduated with first class honours and went on to do a PhD at Imperial College, London on the Precambrian basement rocks of the Western Isles of Scotland. After two years of post doctoral work on geological strain in crystalline rocks he took up a lectureship in structural geology at the University of Wales at Swansea and his research interest shifted first to the Precambrian rocks of Africa, then to the structure and evolution of the French Alps.

During this time the geometrical ideas of 'thin-skin tectonics' were taking hold of the structural geology community. They were highly relevant (and new) in Alpine geology, but, more significantly, were proving important in hydrocarbon exploration, and so, after thirteen years at Swansea, Rod left academia and joined BP in a structural consulting role which was to enable him to see the geology of a very great deal of the world. The last couple of years at BP were spent in Colombia at the time of the discovery and early development of the giant fields of the Llanos foothills, and Rod developed a fascination with Colombia and its geology which eventually took him from BP to consultant, business development and exploration manager roles in Monument, Lasmo and Emerald, all small companies with major interests in Colombia.

After Emerald Rod took up a new global consulting role within the Hess corporation which included substantial amount of regional work in salt provinces, particularly the Gulf of Mexico.

Rod has published on a breadth of structural geology and tectonics. He will have retired from Hess by the time this talk is given, will have taken up a research associate role at the University of Cambridge, and will be doing as much geology as his wife will allow.

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Volume 42 Number 7 March 2012 Page 3

Page 4: Exploration in Fold and Thrust Belts A Personal Perspective 2012 Newsletter.pdf · After two years of post doctoral work on geological strain in crystalline rocks he took up a lectureship

Volume 42 Number 7 March 2012 Page 4

From the President s Desk

I have good news regarding the AGS President-Elect. As I m sure most of you know by now, Steve Wright is stepping down from that position to take on a new role with Chevron in the lower 48. We are very fortunate that Art Banet has agreed to step into the position effective immediately. Art has previously served on the board and is very familiar with the daily operation of the society. He will be able to take on the new responsibilities without missing a beat. Please join me in thanking Art for stepping up to the plate and helping out the society. The board is still looking for members willing to serve as AGS officers for the upcoming 2012-2013 term. In particular, we need volunteers to serve as 1) Vice-President, 2) Secretary and 3) President-Elect to replace Art once he assumes the duties of President in May. The Vice-President s duties include lining up speakers for the luncheon meetings, hosting out-of-town speakers, reserving meeting rooms for upcoming luncheons, and attending monthly board meeting. The Secretary is responsible for taking notes at the monthly board meetings; the President-Elect s duties are limited to attending board meetings. Anyone interested can contact me at [email protected]

. This month s luncheon presentation by Rodney Graham, Research Associate at the University of Cambridge University, is entitled Exploration in fold and thrust belts

a personal perspective . Dr.

Graham is an AAPG Distinguished Lecturer and is a world-renowned authority on orogenic belts. His presentation will be thought-provoking, so come early to get a good seat.

Rodney Graham will be giving a second presentation entitled The French Alps - classic geology re-interpreted in the light of passive margin geology and allocthonous salt tectonics on Friday, March 16 as part of a Brooks Range Structural Workshop held at the ConocoPhillips building located at 700 G street. The informal workshop will be held in room ANO-259 from 9:00 am

12:00 pm and is open to the general

public. See you there! - Ken

The Alaska Geological Society

LUNCHEON SCHEDULE 2011 - 2012

Updates on the web at: http://www.alaskageology.org

September 2011 Thursday, Sept. 15th, Paul Decker, DNR Source-Reservoired Oil Resources, North Slope Alaska

October 2011 Thursday, Oct. 20th, Kristine Crossen and David Yesner, UAA, Youngest Mammoths in America: 5700 Year Old Mammoth Remains from Qagnax Cave, Pribilof Islands, Alaska

November 2011 Thursday, Nov. 17th, Tom Homza, Shell Exploration & Production, Toward an Integrated Model for the Canada Basin: Implications for North Alaska

December 2011 Thursday, Dec. 8th Tad Smith (SEG 2011 Honorary Lecturer), Apache Corporation, Practical Seismic Petrophysics: The Effective Use of Log Data for Seismic Analysis (Joint meeting AGS / GSA)

January 2012 Thursday, Jan 19th Sue Karl, U.S. Geological Survey: Rare Earth Element Deposits, Bokan Mt., SE Alaska

February 2012 Thursday, Feb. 16th Peter Flaig, UT-Austin BEG, Application of LiDAR

March 2012 Thursday, Mar. 15th Rodney Graham (AAPG Distinguished Lecturer), Research Associate, Cambridge, UK, Exploration in Fold & Thrust Belts A Personal Perspective

April 2012 Thursday, Apr. 19th Craig Knutson & Andy Bond, Pioneer Natural Resources Alaska Inc., Geology & Reservoirs of the Oooguruk Field

May 2012 Thursday, May 17th April Parsons, Statoil (Chukchi Sea topic)

If you would like to volunteer a talk or would like to suggest a speaker, please contact Dick Garrard at 644-4429.

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Volume 42 Number 7 March 2012 Page 5

Community Education Corner - Science Fair By Jana DaSilva Lage

The Alaska Science and Engineering Fair will be held at East High School on March 24, 2012. Every year, Alaska Geological Society members judge student projects in the Earth, Planetary and Environmental Science categories and present a notice of award to the students who have the best projects in High,

Middle and Elementary School. The students receive a $25 gift card to Barnes and Noble and are invited to attend a luncheon meeting. In addition, the judges will select a project to receive the Best Geology project to receive a $100 cash award. If you would like to judge or have any questions, please contact me at [email protected] or 980-9368.

2012 AGS Scholarships Results AGS would like to thank those who make the scholarship program possible, including those who donate to the funds and the Scholarship Committee (Sue Karl

USGS, Tom Morahan

PRA, Julie Houle

DNR, Micala Weeks

BP, Bryn Clark

COP, and Game McGimsey

AVO, Pam & Marion Richter

Richter Family). AGS extends a special thanks to Sue Karl for her efforts in coordinating the program and committee.

RICHTER SCHOLARSHIP

The Richter Scholarship is awarded to student applicants chosen by the committee who a) are enrolled at an accredited institute of higher education, b) have status as a BA, BS, MS, or PhD candidate in geoscience or equivalent degree program and c) have a project or thesis/dissertation topic focused on Alaska geology or related geoscience topic with a preference for topics that reflect Don Richter s career interests, including but not limited to: volcanology, igneous petrology, the Wrangell Mountains, the Aleutian arc, the Talkeetna arc, and the stratigraph6y of south-central Alaska.

Recipient: Sara Federschmidt, Masters Student, University of Kentucky: $1500 Project: Paleoseismic and structural characterization of the Hines Creek/Park Road fault at Denali Park, Alaska

AGS SCHOLARSHIPS

The AGS Scholarships are awarded to student applicants chosen by the committee who a) are enrolled at an accredited institute of higher education and b) submit a proposal for thesis or a project topic focused on Alaska geology.

Recipients:

Gabrielle Vance, UAF, MS: $1500 Project: Tectonic geomorphology across the east-central Alaska Range

Sarah Henton, UAF, PhD: $1250 Project: Experiment vs nature: using amphiboles to test models of magma storage and movement from the 2006 eruption of Augustine Volcano, Alaska

Helena Buurman, UAF, PhD: $1000 Project: Characteristics of volcano seismicity in Alaska

Katy Barnhart U Colo., Boulder, PhD: $1000 Project: Flexible heat flow models of the active layer and conductive permafrost: thermal state from field measurements and satellite-derived skin temperature

Andrea Miller, U Texas, Austin, PhD: $750 Project: Reconstructing late Holocene Arctic climate change using high resolution sediment records from Simpson Lagoon, Alaska

Adrienne Kentner, UAF, MS: $500 Project: Geochemical evolution of lower crust in a long-lived subduction setting: proposed work for the Border Ranges Ultramafic-Mafic Complex, Alaska

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Volume 42 Number 7 March 2012 Page 6

ALASKA FOSSIL OF THE MONTH

STRINOGOCEPHALUS AND OMOLONIA (MEMBERS OF THE BRACHIOPOD SUBFAMILY STRINGOCEPHALINAE)

by Robert B. Blodgett and Valeryi V. Baranov (Yakutsk, Sakha Repbulic, Russia)

The March offering for the Alaska Fossil of the month is the genus Stringocephalus and allied genera (including Omolonia) of the subfamily Stringocephlinae. Members of this subfamily have long been regarded as excellent index fossils to the Upper Middle Devonian (Givetian Stage). Although this is still a general truism, a few rare occurrences have been noted in recent years in the upper part of the underlying Eifelian (Lower Middle Devonian) Stage. As an easily recognizable guide fossil to the Late Middle Devonian, they are among the prized collecting objects of Devonian biostratigraphers everywhere.

Members of the subfamily are widely distributed globally during the Givetian in tropical marine seaways (see Fig. 1 for their known global distribution as of 1966). Despite a number of subsequent publications on this group, the basic pattern shown in this figure has not been drastically altered. Stringocephalid brachiopods are typically found in carbonate rocks, though a few rare occurrences have been reported of them from clastic rocks as well

Figure 1. Map showing known global distribution of stringocephalid brachiopods as of 1966 (modified from Boucot et al., 1966). Alaskan occurrences of this distinctive Middle Devonian brachiopod family are shown by red-colored X symbols.

Photo by James Buchanan Can you name this rock formation?

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Volume 42 Number 7 March 2012 Page 7

Members of the Stringocephalinae have been reported in only from several localities in Alaska (Kirk, 1927; Blodgett and Dutro, 1992; Blodgett and others, 2002; Baranov and Blodgett, in press). Kirk (1927) reported their occurrence in Southeast Alaska (Alexander terrane) in rocks now assigned to the Wadleigh Limestone in the Alberto Islands and Coronado Islands on the west side of Prince of Wales Island. The former locality is just north of Craig, while the second locality is situated south-southeast of Craig. One of us (Blodgett) was able to visit the Alberto Islands locality and recover significant new material. These specimens are clearly assignable to the genus Stringocephalus. The Coronados Island material still needs further study, and during a trip planned to the U.S. National Museum shortly, it is hoped obtain it on loan for further study. Illustrations of the southeastern Alaska Stringocephalus are presented below in Figures 2 and 3.

Figure 2. Internal mold of pedicle (ventral) valve of Stringocephalus from exposures of the Wadleigh Limestone on the Alberto Islands, Craig C-4 quadrangle, Southeast Alaska. Smaller scale bar marked in millimeters.

Figure 3. Internal mold of brachiopod (dorsal) valve of Stringocephalus from exposures of the Wadleigh Limestone on the Alberto Islands, Craig C-4 quadrangle, Southeast Alaska. Smaller scale bar marked in millimeters.

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Volume 42 Number 7 March 2012 Page 8

The only other prominent occurrence of stingocephalid brachiopods in Alaska is from the western Brooks Range, on the west side of Punupkahkroak Mountain, De Long Mountains A-3 quadrangle. These specimens were reported by Blodgett and Dutro (1992) as Stringocephalus cf. S. noctua Crickmay, the compared Crickmay species being described from the Givetian of Manitoba, Canada. However, recent work by the authors (Baranov and Blodgett, in press) in comparing this material with similar age faunas from Northeast Asia (Kolyma region) indicate that the Alaskan specimens and the comparable Manitoban material are synonomous with the previous established type species (Omolonia antiqua Alekseeva) of the stringocephalid genus Omolonia Alekseeva in Alekseeva and Nuzhdina, 1967. These ties further strengthen the paleobiogeographic connections recognized between Northeast Asia (NE Russia) with northwestern Alaska. Figure 4 presents several views of Omolonia antiqua Alekseeva from the Punupkahkraok Mountain locality.

Figure 4. Omolonia antiqua Alekseeva from the west side of Punupkahkroak Mountain, De Long Mountains A-3 quadrangle, western Brooks Range. 1-4, posterior, left lateral, ventral, and dorsal views (from Blodgett and Dutro, 1992)

Stringocephalid brachiopods were notably tropical in their distribution during the Givetian, and like many modern tropical shells probably had very brilliant and complex external color patterns. Blodgett and others (1988) documented the occurrence of complex color patterns in specimens of the type species of Stringocephalus, S. burtini, from the Givetian of England (Fig. 5).

Figure 5. Ventral view of Stringocephalus burtini from the Givetian (upper Middle Devonian) of England showing well-developed concentric and radial color bands (from Blodgett and others, 1988).

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It is of interest to note that color patterns (in this case consisting a narrow concentric bands) can also be recognized in stringocephalid brachiopods (Omolonia antiqua) from the western Brooks Range (Fig. 6).

It is most probable that with further geologic mapping and concentrated efforts at making paleontologic collections from Devonian rocks of Alaska that stringocephalid brachiopods will continue to turn up. These are among the largest known Devonian brachiopods and are easy to spot in the field. So next time you find yourself in a beautiful exposed section of Alaskan Devonian carbonate rocks, keep your eyes focused for these intriguing grapefruit sized objects!

REFERENCES

Alekseeva, R.E., and Nuzhdina, N.A., 1967, Nekotorye srednedevonskie terebratulidy Omolonskogo massiva (Severo-Vostok

SSSR). Paleontologicheskii Zhurnal, 1967(1), p. 137-143.

Baranov, V.V., and Blodgett, R.B., in press. The first stringocephalid brachiopods from in the upper Givetian of Selennyakh

Ridge (Northeast Asia) and their paleobiogeographic significance. Journal of Paleontology.

Blodgett, R.B., Boucot, A.J., and Koch, W.F., 1988. New occurrences of color patterns in Devonian articulate brachiopods.

Journal of Paleontology, v. 62, p. 46 51.

Blodgett, R.B., and Dutro, J.T., 1992. Stringocephalus (Brachiopoda) from Middle Devonian (Givetian) rocks of the Baird Group,

Western Brooks Range, Alaska, p. 91 99. In J.R. Chaplin and J. E. Barrick (eds.), Special Papers in Paleontology and

Stratigraphy: A Tribute to Thomas W. Amsden. Oklahoma Geological Survey Bulletin 145.

Blodgett, R. B., Rohr, D.M., and Boucot, A. J., 2002. Paleozoic links among some Alaskan accreted terranes and Siberia based on

megafossils, p. 273-290. In E. L. Miller, A. Grantz, and S. L. Klemperer (eds.), Tectonic Evolution of the Bering Shelf-

Chukchi Sea-Arctic Margin and Adjacent Landmasses. Geological Society of America Special Paper 360.

Boucot, A. J., Johnson, J.G., and Struve, W., 1966. Stringocephalus, ontogeny and distribution. Journal of Paleontology, v. 40, p.

1349-1364.

Kirk, E. 1927. New American occurrences of Stringocephalus. American Journal of Science, Series 5, v. 13, p. 219-222.

Figure 6. Dorsal view of articulated specimen of Omolonia antiqua Alekseeva from Punupkahkroak Mountain, De Long Mountain A-3 quadrangle, western Brooks Range, taken under water to better show the development of concentric color banding on the shell (from Blodgett and others, 1988).

Page 10: Exploration in Fold and Thrust Belts A Personal Perspective 2012 Newsletter.pdf · After two years of post doctoral work on geological strain in crystalline rocks he took up a lectureship

Volume 42 Number 7 March 2012 Page 10

Meeting Information

The American Geological Institute provides a comprehensive list of national and international geoscience meetings at: http://calendar.agiweb.org

LLooccaall MMeeeettiinnggss::

American Water Resources Association Alaska Section http://www.awra.org/state/alaska/index.html

Alaska Geological Society http://www.alaskageology.org

Lunch meetings are held monthly September through May in Anchorage. For more information, contact Jim Clough, 451-5030.

Alaska Miners Association http://www.alaskaminers.org/

The Anchorage branch of the AMA holds weekly meetings at 7 AM every Friday at the Denny s on Northern Lights and Denali. They hold regular luncheon meetings in association with SME. For more information, contact the AMA office at 563-9229.

American Institute of Professional Geologists http://www.aipg.org

AIPG holds regular quarterly evening Section meetings in Anchorage and Fairbanks. For more information contact Mark Lockwood, President, at Shannon & Wilson, Inc., in Fairbanks, 907-458-3142.

Chugach Gem & Mineral Society http://www.chugachgms.org

CG&MS holds all meetings at the First United Methodist Church on 9th Avenue. Contact their hotline at 566-3403 for information on regular monthly business meetings, monthly potlucks, and guidebook sales, including the new Alaska Rockhound Guidebook.

Geophysical Society of Alaska http://gsa.seg.org/

Luncheon meetings are held monthly September through May at the ConocoPhillips Tower. For more information, contact Daniel Yancey, [email protected]

Society of Petroleum Engineers http://alaska.spe.org/

UAS Environmental Science Program http://www.uas.alaska.edu/envs

National Association of Geology Teachers (NAGT)

http://www.nagt

Enhanced Alaska Digital Well Log Data Since 1989

OCS, 95 out of 100 Alaska OCS wells. Mud logs for some. North Aleutian Basin wells, onshore and offshore. North Slope, 556 wildcats and key field wells. Kuparuk River Field, first 567 wells drilled (pre-1985). Southern Alaska, 1063 wells including all wildcats and many field wells. Directional surveys for most.

All digital log files

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Have core data rendered as a depth-shifted well log curve.

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Contact Dan Shier:

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www.rockypine.com

Page 11: Exploration in Fold and Thrust Belts A Personal Perspective 2012 Newsletter.pdf · After two years of post doctoral work on geological strain in crystalline rocks he took up a lectureship

Volume 42 Number 7 March 2012 Page 11

PRA 3601 C Street, Suite 822 Anchorage, AK 99503 (907) 272- 1232, (907) 272- 1344 (fax) [email protected] www.petroak.com

The Alaska Geological Society, Inc.

P.O. Box 101288

Anchorage AK 99510

On the web at: http://www.alaskageology.org

The Alaska Geological Society is an organization which seeks to promote interest in and understanding of Geology and the related Earth Sciences, and to provide a common organization for those individuals interested in geology and the related Earth Sciences.

This newsletter is the monthly (September-May) publication of the Alaska Geological Society, Inc. Number of newsletters/month: ~300

EDITOR Greg Wilson

Alaska Geological Society, Inc. P. O. Box 101288

Anchorage, AK 99510 e-mail: Gregory.c.wilson at conocophillips.com

(907) 263-4748 (office)

MEMBERSHIP INFORMATION AGS annual memberships expire November 1. The annual membership fee is $20/year. You may download a membership application from the

AGS website and return it at a luncheon meeting, or mail it to the address above.

Contact membership coordinator Greg Wilson with changes or updates (e-mail: gregory.c.wilson at conocophillips.com; phone: 907-263-4748)

All AGS publications are now available for on-line purchase on our website. Check to see the complete catalogue.

http://www.alaskageology.org/publications

ADVERTISING RATES Advertisements may be purchased at the following rates:

1/10 Page--$190/9mo, $75/1mo; size=1.8 x 3.5 inch 1/4 Page--$375/9mo, $95/1mo; size=4.5 x 3.5 or 2.2 x 7.5 inch 1/3 Page- $470/9mo, $105/1mo; size=7.0 x 3.5 or 3.0 x 7.5 inch 1/2 Page--$655/9mo, $125/1mo; size=9.0 x 3.5 or 4.5 x 7.5 inch

Full Page--$1000/9mo, $165/1mo; size=7.5 x 9.0 inch 1mo rate=(9mo rate/9)+$50 (rounded up).

Contact Keith Torrance (614) 264-4506 for advertising information.

Membership Notes

Annual Dues for Membership in AGS are now $20.00

Membership renewal is Nov. 1st

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Volume 42 Number 7 March 2012 Page 12

Note: e-mail addresses now contain at instead of @ Please change to @ when typing.

Phone e-mail Workplace President Ken Helmold 269-8673 Ken.helmold at alaska.gov DNR / DOG Past-President Tom Morahan 230-1672 Tmorahan at petroak.com PRA/ConocoPhillips President-Elect Steve Wright 263-7865 Sswr at chevron.com Chevron Vice-President Dick Garrard 644-4429 Rgarrard at talismanusa.com Talisman Treasurer Al Hunter 777-8324 whunter at hilcorp.com Hilcorp Secretary Chad Hults 786-7417 Chults at usgs.gov USGS Director 10-2012 Lee Ann Munk 786-6895 aflm at uaa.alaska.edu UAA Director 10-2012 Lisa Wright 263-4823 Lisa.H.Wright at conocophillips.com ConocoPhillips Director 10-2012 Kirk Sherwood 334-5337 Kirk.Sherwood at boem.gov BOEM Director 11-2013 Tom Homza 770-3701 Thomas.Homza at shell.com Shell Director 11-2013 Dave Schoderbek 265-6010 David.A.Schoderbek at ConocoPhillips.com ConocoPhillips Director 11-2013 Jim Brown 276-2675 [email protected] Alaska Pacific University

AAPG Delegate Arlen Ehm 333-8880 Arlenehm at gci.net Geological Consultant AAPG Delegate & David Hite 258-9059 Hitelamb at alaska.net Geological Consultant Advertising Keith Torrance 264-4506 Kwtorrance at uaa.alaska.edu Univ. of Alaska Anchorage Com. Ed./Science Fair Jana DaSilva Lage 677-7883 Jldasilva5 at hotmail.com BOEM Field Trips Tom Plawman 227-2781 Tom.plawman at bp.com BP Bylaws Sue Karl 786-7428 Skarl at usgs.gov USGS Memberships Greg Wilson 263-4748 Gregory.c.wilson at conocophillips.com ConocoPhillips Alaska Newsletter Editor Greg Wilson 263-4748 Gregory.c.wilson at conocophillips.com ConocoPhillips Alaska Publications Peter Johnson 334-5329 Peter.Johnson at boem.gov BOEM Scholarship Sue Karl 786-7428 Skarl at usgs.gov USGS Website Jan Hazen Jan at homestead-graphics.com Consultant Fundraising Sunny Foster 269-8707 Sunny.Remmy at Alaska.gov DNR / DOG

Alaska Geological Society, Inc. P. O. Box 101288 Anchorage, AK 99510

2011 - 2012 Alaska Geological Society Board

Committees and Delegates

Redoubt Volcano 2009 Photo: G. Wilson