I urge you to attend the upcoming meeting on December 7th when we will conduct the annual business for the Society. At this meeting, we will honor the committee chair persons for the past year, receive our treasurer's report, and elect officers and councilors that will serve for the upcoming year. Afterwards, it will be my turn to describe to you the joys of combining paleomagnetism and structural geology!
As this is my final note as president, I once again wish to thank all those members who have helped keep the society running this year. I have enjoyed my service for the Society this year, particularly the opportunity to meet and work with many of our members. I know that the Society will be in good hands next year with incoming president Michelle Tuttle and I look forward to Michelle's January kickoff event - the Emmons Lecture on Snowball Earth by Paul Hoffman. It will be great night.
-Mark R. Hudson, CSS President
Paleomagnetism, the study of ancient Earth magnetic fields trapped in rocks, has long been used in tectonic studies. Initially focused on plate-tectonic-scale reconstructions, technological advances now make paleomagnetism practical at scales of mountain ranges to individual fault blocks, the realm structural geology. General deformation of material is broken into 4 components (rotation, translation, dilation, and distortion), but most strain in the brittle upper crust is accommodated by coordinated block rotation and fault translation. Thus, a major application of paleomagnetism in structural geology is to constrain the three-dimensional geometry of fault block rotations. Paleomagnetic data can be used to detect tilt of igneous plutons and massive lavas that lack field markers of paleohorizontal. Coupled with isotopic dating, such paleomagnetically determined tilts provide tight constraints on styles and ages of upper crustal deformation. Paleomagnetic vectors are particularly useful as structural markers for detection of steep-axis rotations; unambiguous field markers of such rotations are rare. Paleomagnetic data integrated with geologic mapping and fault studies have documented broad, previously unrecognized zones that accommodated distributed strike-slip strain via vertical axis rotation and discontinuous faulting. Case studies from the Basin and Range and Rocky Mountains provinces illustrate these paleomagnetic applications and their tectonic implications.
-Michael Machette, CSS Treasurer
First Place ($125): Alan Koenig, Colorado State University:
Inclusions and Chemical Heterogeneities in Garnet: Problems, Pitfalls and Potential for Sm-Nd
Geochronology
Runner-up ($75): David R. Pyles, University of Colorado:
Stratigraphic anomalies associated with a tectonically active embayment in the Cretaceous Western
Interior Seaway: A story of the Lewis Shale and Fox Hills Sandstone, Wyoming
Runner-up ($75): Kerstin Witte Colorado School of Mines:
Preliminary Assessment of the suitability of Laser Ablation ICPMS and Engelman spruce as a technique
to Determine Trends in Trace Metal Movement
I would like to thank Karl Kellogg, Scott Minor, and Michelle Tuttle for being judges; and Mark Hudson for all of his work to make this meeting so well-run, excellent, and enjoyable, as has been the case for all of our meetings this year.
-Scott Lundstrom, Student Night Chair
Denver International Petroleum Society meets the 2nd Friday of each month at the Wynkoop Brewing Co., 18th and Wynkoop Streets. Reception begins at 11:30 a.m., luncheon at 12 p.m., program at 12:30 p.m. Make reservations (required) by leaving message at (303) 623-5396. Reservations accepted after 8 a.m. on Friday until 10:30 a.m. on Wednesday prior to the meeting. Cancellations accepted until 11:00 am Wednesday prior to the meeting. Cost: $15 for lunches; talk only is available for $2 (make checks payable to "D.I.P.S."). Contact Keith Murray at (303) 986-8554 for information.
Denver Region Exploration Geologists' Society (DREGS) meets in the Mutual Consolidated Water Building, 12700 West 27th Avenue, Lakewood. Social hour 6:00-7:00 p.m. Technical presentation at 7:00 p.m. Meetings are normally scheduled for the first Monday of each month. For information contact Jim Piper, (303) 932-0137, or the website http://www.dregs.org/.
Colorado School of Mines Lectures For Heiland Lectures at 4:00 p.m. on Fridays, contact Michelle Szobody (303) 273-3451. For information on Van Tuyl Lectures, call the Dept. of Geology at (303) 273-3800.
Colorado State University Geology Lectures Mondays, 4:10 p.m. in room 109 or 316 of the Natural Resources Building. Call the Dept. of Earth Resources at (970) 491-5661 for further details.
University of Colorado at Boulder, Geological Sciences Colloquium Wednesdays, 4:00-5:30 p.m., Rm. 180. For schedule, contact Kathy Madsen 303-492-8141.
University of Northern Colorado, Greeley, Earth Science Seminar Fridays, 4:00-5:00 p.m., Ross Hall, Rm. 3310. For a schedule, call UNC Dept. of Earth Sciences: 970-351-2647.
USGS Geologic Division Colloquium
Marty Parris (WRD): "Syntectonic fluid flow and fracturing, Eastern Brooks Range,
Alaska"
Bldg 20, Denver Federal Center, Thursdays, 1:30-2:30 p.m., Foord Conference Room.
For a more complete schedule, contact Laura Strickland: (303) 236-5302.
Memorial Funds. The Memorial Fund Scholarship Program was started in 1984 with the Ogden Tweto Fund and has grown to include five funds. As a result of generous contributions by family members, friends, and Society members, each of these funds have grown substantially since their inception. As of December 1, 2000, the total value of our Memorial Fund investments was about $179,100 (this includes about $10,000 in interest reserved for the 2001 Memorial Fund awards and $30,000 in year 2000 contributions from the Bill and Ida Pierce Trust). The Memorial Funds honor the following individuals and primary objectives:
| Ogden Tweto (1984) | Field-based earth-science research in Colorado and adjacent areas; |
| Stephen Oriel (1986) | Geologic studies of the Idaho-Wyoming thrust belt and associated topics; |
| Edwin Eckel (1990) | Engineering geologic studies in the United States; |
| William-Pierce (1994) | Studies of the Heart Mountain Fault, Wyoming, and associated problems; |
| George Snyder (1998) | Studies of Precambrian igneous/metamorphic geology and basement tectonics in the Rocky Mountain region. |
-Michael Machette, CSS Treasurer
| Number of Awards (Partial grants co-sponsored by 2 funds) |
Amount of Awards ($) (* No research proposals received this year) |
|
Year |
Tweto |
Oriel |
Eckel |
Pierce |
Snyder |
Total |
Tweto |
Oriel |
Eckel |
Pierce |
Snyder |
Total (aver. per grant) |
|
|
1984 |
3 |
3 |
1,300 |
1,300 (433) |
|||||||||
|
1985 |
3 |
3 |
1,050 |
1,050 (350) |
|||||||||
|
1986 |
2 |
0 |
2 |
650 |
0 |
650 (325) |
|||||||
|
1987 |
2 |
1 |
3 |
1,700 |
400 |
2,100 (700) |
|||||||
|
1988 |
1 |
1 |
2 |
900 |
450 |
1,350 (675) |
|||||||
|
1989 |
2 |
1 |
3 |
1,940 |
530 |
2,470 (823) |
|||||||
|
1990 |
3.5 |
1.5 |
0 |
5 |
2,910 |
1,190 |
*0 |
4,100 (820) |
|||||
|
1991 |
4 |
2 |
1 |
7 |
3,100 |
1,500 |
650 |
5,250 (750) |
|||||
|
1992 |
5 |
2 |
2 |
9 |
3,500 |
1,890 |
1,270 |
6,660 (740) |
|||||
|
1993 |
4.5 |
1.5 |
2 |
8 |
3,030 |
1,290 |
1,000 |
5,320 (665) |
|||||
|
1994 |
5 |
2.5 |
2.5 |
0 |
10 |
3,590 |
1,600 |
1,450 |
*0 |
6,640 (664) |
|||
|
1995 |
5 |
2 |
2 |
1 |
10 |
2,900 |
1,400 |
1,200 |
850 |
6,350 (635) |
|||
|
1996 |
4 |
3 |
2 |
2 |
11 |
2,900 |
1,800 |
1,300 |
1,900 |
7,900 (718) |
|||
|
1997 |
4 |
3 |
2 |
1 |
10 |
3,900 |
2,400 |
1,750 |
1,700 |
9,750 (905) |
|||
|
1998 |
5 |
3 |
3 |
0 |
11 |
3,545 |
2,100 |
1,972 |
*0 |
*0 |
7,617 (692) |
||
|
1999 |
5 |
3 |
1 |
2 |
1 |
12 |
3,975 |
2,500 |
1,500 |
2,465 |
750 |
11,190 (933) |
|
|
2000 |
4 |
3 |
2 |
1 |
2 |
12 |
2,710 |
2,900 |
1,550 |
1,200 |
1,250 |
9,610 (800) |
|
|
Total |
62 |
29.5 |
19.5 |
7 |
3 |
121 |
43,600 |
21,950 |
13,642 |
8,115 |
2,000 |
89,307 (738) |