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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. -
Superfund Sites Yield New Drugs/Tourist Attractions
Fact or Fiction? Jack W. Dini 1537 Desoto Way Livermore, CA 94550 E-mail: [email protected] Superfund Sites Yield New Drugs/Tourist Attractions In 1993, Travel and Leisure Magazine The 1.5-mile wide, 1,800-foot deep pit, fi ght migraines and cancer.4 ran an article on the Continental Divide. part of the nation’s largest Superfund site, In recent years, more than 40 small It was tough on Butte: “the ugliest spot in has been fi lling for the last 20 years with organisms have been discovered in the lake Montana - despite a spirited historic dis- a poisonous broth laced with heavy metals and these hold much potential for agricul- trict amid the rubble, the overall picture is and arsenic - a legacy of Butte’s copper ture and medicine. It’s even thought that desolate.” It called nearby Anaconda “a sad mining days. When mining offi cials aban- some of these organisms can be employed sack mining town dominated by a smelter doned the pit and stopped the pumps that to reclaim the lake and other similarly con- smokestack.”1 Today things are somewhat kept it dry, they opened the spigots to about taminated waters by neutralizing acidity different for these two sites. 3 million gallons of water per day. Today, and absorbing dissolved metals. the lake is about 850 feet deep and contains Andrea and Don Stierle and their col- Butte, Montana - Lake Berkeley more than 3 billion cubic feet of water.3 leagues have found a strain of the pitho- Edwin Dobb reports, “At one time Butte Lake Berkeley, also known as The myces fungi producing a compound that provided a third of the copper used in the Berkeley Pit, covers almost 700 acres of bonds to a receptor that causes migraines United States - all from a mining district the former open-pit copper mine. -
Analysis of Timber Depredations in Montana to 1900
University of Montana ScholarWorks at University of Montana Graduate Student Theses, Dissertations, & Professional Papers Graduate School 1967 Analysis of timber depredations in Montana to 1900 Edward Bernie Butcher The University of Montana Follow this and additional works at: https://scholarworks.umt.edu/etd Let us know how access to this document benefits ou.y Recommended Citation Butcher, Edward Bernie, "Analysis of timber depredations in Montana to 1900" (1967). Graduate Student Theses, Dissertations, & Professional Papers. 4709. https://scholarworks.umt.edu/etd/4709 This Thesis is brought to you for free and open access by the Graduate School at ScholarWorks at University of Montana. It has been accepted for inclusion in Graduate Student Theses, Dissertations, & Professional Papers by an authorized administrator of ScholarWorks at University of Montana. For more information, please contact [email protected]. / 7y AN ANALYSIS OF TIMBER DEPREDATIONS IN MONTANA TO 1900 by Edward Bernie Butcher B. S. Eastern Montana College, 1965 Presented in partial fulfillment of the requirements for the degree of Master of Arts UNIVERSITY OF MONTANA 1967 Approved by: (fhe&d j Chairman, Board of Examiners Deaf, Graduate School JU N 1 9 1967 Date UMI Number: EP40173 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. Dissertation Publishing UMI EP40173 Published by ProQuest LLC (2014). Copyright in the Dissertation held by the Author. -
Clark and Daly - a Personality Analysis
The topper King?: Clark and Daly - A Personality Analysis A Thesis Presented to the Department of History, Carroll College, In Partial Fulfillment of the Requirements for Graduation with Honors By Michael D. Walsh * \ March 1975 CORETTE LIBRARY CARROI I mi I cr.c 5962 00082 610 CARROLL COLLEGE LIBRARY HELENA, MONTANA 596QH SIGNATURE PAGE This thesis for honors recognition has been approved for the Department of History. 7 rf7ir ....... .................7 ' Date ACKNOWLEDGMENTS For assistance in my research I wish to thank the staff of the Montana Historical Society Library. I would like to thank my mother who typed this paper and my father who provided the copies. My thanks to Cynthia Rubel and Michael Shields who served as proof readers. I am also grateful to Reverend Eugene Peoples,Ph.D., and Dr. William Lang who read this thesis and offered help ful suggestions. Finally, my thanks to Reverend William Greytak,Ph.D, my director, for h1s criticism, guidance and encouragement which helped me to complete this work. CONTENTS Chapter 1. Their Contemporaries.................................... 1 Chapter 2. History’s Viewpoint ..................................... 13 Chapter 3. Correspondence and Personal Reflections . .................... ....... 24 Bibliography 32 CHAPTER 1 Their Contemporaries In 1809 the territory of Montana was admitted to the Union as the forty-first state, With this act Montana now had to concern herself with the elections of public officials and the selection of a location for the capital. For the next twelve years these political issues would provide the battleground for two men, fighting for supremacy in the state; two men having contributed considerably to the development of Montana (prior to 1889) would now subject her to twelve years of political corruption, William Andrew Clark, a migrant from Pennsylvania, craved the power which would be his if he were to become the senator from Montana. -