117Th Parks by Congressional District
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
USGS Open-File Report 2005-1190, Table 1
TABLE 1 GEOLOGIC FIELD-TRAINING OF NASA ASTRONAUTS BETWEEN JANUARY 1963 AND NOVEMBER 1972 The following is a year-by-year listing of the astronaut geologic field training trips planned and led by personnel from the U.S. Geological Survey’s Branches of Astrogeology and Surface Planetary Exploration, in collaboration with the Geology Group at the Manned Spacecraft Center, Houston, Texas at the request of NASA between January 1963 and November 1972. Regional geologic experts from the U.S. Geological Survey and other governmental organizations and universities s also played vital roles in these exercises. [The early training (between 1963 and 1967) involved a rather large contingent of astronauts from NASA groups 1, 2, and 3. For another listing of the astronaut geologic training trips and exercises, including all attending and the general purposed of the exercise, the reader is referred to the following website containing a contribution by William Phinney (Phinney, book submitted to NASA/JSC; also http://www.hq.nasa.gov/office/pao/History/alsj/ap-geotrips.pdf).] 1963 16-18 January 1963: Meteor Crater and San Francisco Volcanic Field near Flagstaff, Arizona (9 astronauts). Among the nine astronaut trainees in Flagstaff for that initial astronaut geologic training exercise was Neil Armstrong--who would become the first man to step foot on the Moon during the historic Apollo 11 mission in July 1969! The other astronauts present included Frank Borman (Apollo 8), Charles "Pete" Conrad (Apollo 12), James Lovell (Apollo 8 and the near-tragic Apollo 13), James McDivitt, Elliot See (killed later in a plane crash), Thomas Stafford (Apollo 10), Edward White (later killed in the tragic Apollo 1 fire at Cape Canaveral), and John Young (Apollo 16). -
Martian Crater Morphology
ANALYSIS OF THE DEPTH-DIAMETER RELATIONSHIP OF MARTIAN CRATERS A Capstone Experience Thesis Presented by Jared Howenstine Completion Date: May 2006 Approved By: Professor M. Darby Dyar, Astronomy Professor Christopher Condit, Geology Professor Judith Young, Astronomy Abstract Title: Analysis of the Depth-Diameter Relationship of Martian Craters Author: Jared Howenstine, Astronomy Approved By: Judith Young, Astronomy Approved By: M. Darby Dyar, Astronomy Approved By: Christopher Condit, Geology CE Type: Departmental Honors Project Using a gridded version of maritan topography with the computer program Gridview, this project studied the depth-diameter relationship of martian impact craters. The work encompasses 361 profiles of impacts with diameters larger than 15 kilometers and is a continuation of work that was started at the Lunar and Planetary Institute in Houston, Texas under the guidance of Dr. Walter S. Keifer. Using the most ‘pristine,’ or deepest craters in the data a depth-diameter relationship was determined: d = 0.610D 0.327 , where d is the depth of the crater and D is the diameter of the crater, both in kilometers. This relationship can then be used to estimate the theoretical depth of any impact radius, and therefore can be used to estimate the pristine shape of the crater. With a depth-diameter ratio for a particular crater, the measured depth can then be compared to this theoretical value and an estimate of the amount of material within the crater, or fill, can then be calculated. The data includes 140 named impact craters, 3 basins, and 218 other impacts. The named data encompasses all named impact structures of greater than 100 kilometers in diameter. -
Production and Saturation of Porosity in the Lunar Highlands from Impact Cratering
The fractured Moon: Production and saturation of porosity in the lunar highlands from impact cratering The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. Citation Soderblom, Jason M., et al. “The Fractured Moon: Production and Saturation of Porosity in the Lunar Highlands from Impact Cratering.” Geophysical Research Letters, vol. 42, no. 17, Sept. 2015, pp. 6939–44. © 2015 American Geophysical Union As Published http://dx.doi.org/10.1002/2015GL065022 Publisher American Geophysical Union (AGU) Version Final published version Citable link http://hdl.handle.net/1721.1/118615 Terms of Use Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. PUBLICATIONS Geophysical Research Letters RESEARCH LETTER The fractured Moon: Production and saturation 10.1002/2015GL065022 of porosity in the lunar highlands Key Points: from impact cratering • The relation between impact-generated porosity and crater size is quantified Jason M. Soderblom1, Alexander J. Evans2, Brandon C. Johnson1, H. Jay Melosh3, Katarina Miljković1,4, • Impacts into highly porous targets 5 6 7 8 3 result in positive gravity anomalies Roger J. Phillips , Jeffrey C. Andrews-Hanna , Carver J. Bierson , James W. Head III , Colleen Milbury , 9 7 1 2,10 11 • The cratering record of the oldest Gregory A. Neumann , Francis Nimmo , David E. Smith , Sean C. Solomon , Michael M. Sori , lunar surfaces is preserved in the -
POLYGONAL IMPACT CRATERS on CHARON. C.B. Beddingfield1,2, R
51st Lunar and Planetary Science Conference (2020) 1241.pdf POLYGONAL IMPACT CRATERS ON CHARON. C.B. Beddingfield1,2, R. Beyer1,2, R.J. Cartwright1,2, K. Singer3, S. Robbins3, S.A. Stern3, V. Bray4, J.M. Moore2, K. Ennico2, C.B. Olkin3, J.R. Spencer3, H.A. Weaver5, L.A. Young3, A.Verbiscer6, J. Parker3, and the New Horizons Geology, Geophysics, and Imaging (GGI) Team; 1SETI In- stitute, Mountain View, CA, 2NASA Ames Research Center, Mountain View, CA ([email protected]), 3Southwest Research Institute, Boulder, CO, 4University of Arizona, Tucson, AZ, 5John Hopkins University Applied Physics Laboratory, Laurel, MD, 6University of Virginia, Charlottesville, VA. Introduction: Polygonal impact craters (PICs) re- flect pre-existing extensional and strike-slip faults and fractures in the target material [e.g. 1-9]. PIC straight rim segments therefore can provide important infor- mation for deciphering the tectonic histories of plane- tary bodies [e.g. 8]. The only known PIC formation mechanism is the presence of pre-existing sub-vertical structures within the target material [e.g. 5, 7, 11-13]. In contrast, circular impact craters (CICs) are in- ferred to result from impact events in non-tectonized target material. CICs can also form in pre-fractured tar- get material if the fractures are widely or closely spaced, if the fracture system is highly complex, or if the target material is covered by a thick layer of non-cohesive sed- iment that limits interactions between the impactor and the underlying bedrock/ice [e.g. 14]. Consequently, PICs and CICs are useful tools to distinguish between Fig. -
Secondary Craters on Europa and Implications for Cratered Surfaces
Vol 437|20 October 2005|doi:10.1038/nature04069 LETTERS Secondary craters on Europa and implications for cratered surfaces Edward B. Bierhaus1, Clark R. Chapman2 & William J. Merline2 For several decades, most planetary researchers have regarded the craters were typically not spatially random, but instead appeared in impact crater populations on solid-surfaced planets and smaller clumps and clusters16 even at distances far (several hundred kilo- bodies as predominantly reflecting the direct (‘primary’) impacts metres) from the nearest large primary crater. This clustered spatial of asteroids and comets1. Estimates of the relative and absolute distribution contrasts with primary impacts, which are spatially ages of geological units on these objects have been based on this random. The low spatial density and unusual non-random spatial assumption2. Here we present an analysis of the comparatively distribution of Europa’s small craters enabled us to achieve what has sparse crater population on Jupiter’s icy moon Europa and suggest been previously difficult, namely unambiguous identification and that this assumption is incorrect for small craters. We find that quantification of the contribution of distant secondary craters to the ‘secondaries’ (craters formed by material ejected from large total crater SFD. This, in turn, allows us to re-examine the overall primary impact craters) comprise about 95 per cent of the small crater age-dating methodology. We discuss the specifics of the craters (diameters less than 1 km) on Europa. We therefore con- Europa data first. clude that large primary impacts into a solid surface (for example, We measured more than 17,000 craters in 87 low-compression, ice or rock) produce far more secondaries than previously low-sun, high-resolution Europa images (scales ,60 m pixel21), believed, implying that the small crater populations on the which cover nine regions totalling 0.2% of Europa’s surface (a much Moon, Mars and other large bodies must be dominated by larger percentage of Europa has been imaged at lower resolutions), secondaries. -
Ouglass Aadc News
ANNUAL REPORT ISSUE Volume 47, No. 1 January 2016 OUGLASS AADC NEWS Alumnae- created Alumnae -led Alumnae- driven Message from the Associate Alumnae of Douglass College Executive Director Valerie L. Anderson ’81, MBA Douglass alumnae and friends continue to amaze and mediation so that the AADC can continue the impor - inspire us every day. The leadership of the Associate tant work we have successfully carried out for nearly a Alumnae of Douglass College and all of the dedicated century. alumnae who share their time, talents and treasures, We will continue to share information on our web - have demonstrated the power of site, through digital messages, and our alumnae sisterhood. Your to reach out to all alumnae and engagement and resourcefulness The AADC remains a friends as information becomes keep our alumnae organization available and when mediation has grounded during challenging times vital organization concluded. Please see www.douglass and propel us into the future. Your alumnae.org for important updates support is critical to the AADC connecting alumnae from the AADC. remaining a vital organization. The AADC remains a vital organ - In this timely newsletter, we across many ization connecting alumnae across provide the AADC’s annual report many generations and from every for the fiscal year 2014-2015. generations and from walk of life. We encourage all alum - As we go to press, our leader - nae to come celebrate or get ship hopes to conclude mediation every walk of life. involved with upcoming AADC soon with Rutgers University and Rutgers University events and programs this spring. We are also working Foundation. -
The Civilian Conservation Corps and the National Park Service, 1933-1942: an Administrative History. INSTITUTION National Park Service (Dept
DOCUMENT RESUME ED 266 012 SE 046 389 AUTHOR Paige, John C. TITLE The Civilian Conservation Corps and the National Park Service, 1933-1942: An Administrative History. INSTITUTION National Park Service (Dept. of Interior), Washington, D.C. REPORT NO NPS-D-189 PUB DATE 85 NOTE 293p.; Photographs may not reproduce well. PUB TYPE Reports - Descriptive (141) -- Historical Materials (060) EDRS PRICE MF01/PC12 Plus Postage. DESCRIPTORS *Conservation (Environment); Employment Programs; *Environmental Education; *Federal Programs; Forestry; Natural Resources; Parks; *Physical Environment; *Resident Camp Programs; Soil Conservation IDENTIFIERS *Civilian Conservation Corps; Environmental Management; *National Park Service ABSTRACT The Civilian Conservation Corps (CCC) has been credited as one of Franklin D. Roosevelt's most successful effortsto conserve both the natural and human resources of the nation. This publication provides a review of the program and its impacton resource conservation, environmental management, and education. Chapters give accounts of: (1) the history of the CCC (tracing its origins, establishment, and termination); (2) the National Park Service role (explaining national and state parkprograms and co-operative planning elements); (3) National Park Servicecamps (describing programs and personnel training and education); (4) contributions of the CCC (identifying the major benefits ofthe program in the areas of resource conservation, park and recreational development, and natural and archaeological history finds); and (5) overall -
Courier: the National Park Service Newsletter
Courier TheNational Park Service Newsletter Vol. 4, No. 1 Washington, D.C. January 1981 Alaska: A new frontier for NPS By Candace K. Garry Public Information Specialist Office of Public Affairs, WASO Photos by Candace Carry. Author's Note: Alaska. The mere mention of it boggles the imagination. Adjectives cannot describe the scenery, the people, and the culture adequately. It was a case of "scenic shock" that pervaded my travels through vast expanses of wilderness while I visited there in late August. Scenic shock, not unusual among first-time Aerial view of Mount Mamma in Lake Clark NP. visitors to this awesome State, was an apt description of my experience while flying over Lake Clark National Park and driving After years of complex negotiation and In addition, 13 wild rivers were through Mount McKinley National Park discussion, the National Park Service's designated for Park Service (now Denali National Park). role in Alaska was resolved by the administration, all but one lying entirely There is an element of frustration, passage of the Alaska Lands Bill, signed within the boundaries of the newly trying to condense all of Alaska into 2 into law by Pres'dent Carter on created parks, monuments, and weeks. It can't be done. Also, there is the Dec. 2. preserves. The law also establishes 32.4 challenge to understand, in a short time, The legislation supercedes the million acres of wilderness within the how NPS employees in Alaska feel about President's proclamations creating a Alaska components of the National Park the Service's mission and our future series of national monuments in Alaska System. -
Glossary of Lunar Terminology
Glossary of Lunar Terminology albedo A measure of the reflectivity of the Moon's gabbro A coarse crystalline rock, often found in the visible surface. The Moon's albedo averages 0.07, which lunar highlands, containing plagioclase and pyroxene. means that its surface reflects, on average, 7% of the Anorthositic gabbros contain 65-78% calcium feldspar. light falling on it. gardening The process by which the Moon's surface is anorthosite A coarse-grained rock, largely composed of mixed with deeper layers, mainly as a result of meteor calcium feldspar, common on the Moon. itic bombardment. basalt A type of fine-grained volcanic rock containing ghost crater (ruined crater) The faint outline that remains the minerals pyroxene and plagioclase (calcium of a lunar crater that has been largely erased by some feldspar). Mare basalts are rich in iron and titanium, later action, usually lava flooding. while highland basalts are high in aluminum. glacis A gently sloping bank; an old term for the outer breccia A rock composed of a matrix oflarger, angular slope of a crater's walls. stony fragments and a finer, binding component. graben A sunken area between faults. caldera A type of volcanic crater formed primarily by a highlands The Moon's lighter-colored regions, which sinking of its floor rather than by the ejection of lava. are higher than their surroundings and thus not central peak A mountainous landform at or near the covered by dark lavas. Most highland features are the center of certain lunar craters, possibly formed by an rims or central peaks of impact sites. -
The Composition of the Lunar Crust: Radiative Transfer Modeling and Analysis of Lunar Visible and Near-Infrared Spectra
THE COMPOSITION OF THE LUNAR CRUST: RADIATIVE TRANSFER MODELING AND ANALYSIS OF LUNAR VISIBLE AND NEAR-INFRARED SPECTRA A DISSERTATION SUBMITTED TO THE GRADUATE DIVISION OF THE UNIVERSITY OF HAWAI‘I IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY IN GEOLOGY AND GEOPHYSICS DECEMBER 2009 By Joshua T.S. Cahill Dissertation Committee: Paul G. Lucey, Chairperson G. Jeffrey Taylor Patricia Fryer Jeffrey J. Gillis-Davis Trevor Sorensen Student: Joshua T.S. Cahill Student ID#: 1565-1460 Field: Geology and Geophysics Graduation date: December 2009 Title: The Composition of the Lunar Crust: Radiative Transfer Modeling and Analysis of Lunar Visible and Near-Infrared Spectra We certify that we have read this dissertation and that, in our opinion, it is satisfactory in scope and quality as a dissertation for the degree of Doctor of Philosophy in Geology and Geophysics. Dissertation Committee: Names Signatures Paul G. Lucey, Chairperson ____________________________ G. Jeffrey Taylor ____________________________ Jeffrey J. Gillis-Davis ____________________________ Patricia Fryer ____________________________ Trevor Sorensen ____________________________ ACKNOWLEDGEMENTS I must first express my love and appreciation to my family. Thank you to my wife Karen for providing love, support, and perspective. And to our little girl Maggie who only recently became part of our family and has already provided priceless memories in the form of beautiful smiles, belly laughs, and little bear hugs. The two of you provided me with the most meaningful reasons to push towards the "finish line". I would also like to thank my immediate and extended family. Many of them do not fully understand much about what I do, but support the endeavor acknowledging that if it is something I’m willing to put this much effort into, it must be worthwhile. -
Southwestern M O N U M E N
SOUTHWESTERN MONUMENTS MONTHLY REPORT OCTOBER - - - - 1938 DEPARTMENT OF THE INTERIOR NATIONAL PARK SERVICE SOUTHWESTERN MONUMENTS OCTOBER, 1338, REPORT INDEX OPENING, by Superintendent Frank Pinkley, 27,1 CONDENSED GENERAL REPORT Travel ........... ,277 400 Flora, Fauna, and Natural 000 General. -278 Fhenomena. .280 100 Administrative . , . .278 500 Tse of Facilities by Public,280 200 Maintenance, Improvements, 600 Protection 281 and New Construction . .279 700 Archeology, Fist. ,Pre-Hist... 281 300 Activities Other .Agencies,279 900 Miscellaneous. ...... 282 RETORTS FPOM KEN IN THE FIE'D Arches .£34 Gran Ouivi'-a. ......... .294 Aztec Ruins ......... -.284 Hove:.weep 286 Bandelier .... ...... ..297 Mobile Unit .......... .336 Bandelier CCC ..... .299 Montezuma Jastle. ........ ,305 Bandelier Forestry. , .300 Natural Fridges ........ .320 Canyon de Chelly. ...... .318 • Navajo .312 Capulin Mountain. ...... ,319 pipe Spring 292 Casa Grande .......... -308 Saguaro ............ .237 Casa Grande Side Camp .... .310 Sunset Crater ......... .291 Chaco Canyon. ........ .302 Tumacacori. .......... .312 Chiricahua. ......... .295 -Yalnut Canyon ......... .301 Chiricahua CCC. ....... .296 White Sands .......... .283 El Morrc. .......... .315 Wupatki 289 HEADQUARTERS Aztec Ruins Visitor Statistics.333 Casa Grande Visitor Statistics. .331 Branch of Accounting. .... .339 Comparative Visitor Figures . .329 Branch of Education ..... .324 October Visitors to S.W.M 334 Branch of Maintenance .... :323 Personnel Notes 340 THE SUPPLEMENT Beaver Habitat at Bandelier, By W. B. McDcugall ..... .351 Geology Notes on the Montezuma Castle Region, by E..C. Alberts. .353 Geology Report on the Hovenweep National Monument, by C. N. Gould . .357 Moisture Retention of Cacti,'by David J.'Jones 353 Ruminations, by The Boss. '.'•'. .361 Supplemental Observations, from the- Field ........ .344 , SOUTHWESTERN MONUMENTS PERSONNEL HEADQUARTERS: National Park Service, Coolidge, Arizona. Frank Pinkley, Superintendent; Hugh M. -
GSA TODAY December Vol
Vol. 5, No. 12 December 1995 INSIDE • New Members, Fellows, Student Associates, p. 247 GSA TODAY South-Central Section Meeting, p. 250 • A Publication of the Geological Society of America • Northeastern Section Meeting, p. 253 Seismic Images of the A B Core-Mantle Boundary Michael E. Wysession, Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130 C D ABSTRACT INTRODUCTION Seismology presents several ways While most geologists, including of providing images of the geologic specialists in the field of seismology, structures that exist in the lowermost study rocks at Earth’s surface, more mantle just above the core-mantle attention also is being paid to the boundary (CMB). An understanding planet’s other major boundary, that of the possibly complex geophysical between the core and mantle. With a E F processes occurring at this major density jump of 4.3 kg/m3 between discontinuity requires the combined the silicate lower mantle and the liquid efforts of many fields, but it is the iron outer core, as well as a tempera- role of seismology to geographically ture increase of possibly 1500 °C map out this largely uncharted terri- between the lower mantle adiabat and tory. Seismic phases that reflect, outer core, the core-mantle boundary diffract, and refract across the CMB (CMB) may well be Earth’s most signifi- can all be used to provide different cant and dramatic discontinuity. Our Figure 1. Images from a motion picture showing the propagation of seismic shear energy information in different ways. increasing knowledge of this highly through the mantle (Wysession and Shore, 1994).