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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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North Africa
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maps (2)
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Raisin City field
Geophysical history of Raisin City oil field, California
California Exploration and Development in 1941
Developments in California in 1943
Oil and Gas Developments in West Coast in 1986
Developments in West Coast Area in 1955
The first female Fellows and the status of women in the Geological Society of London
Abstract Women were first permitted to become Fellows of the Geological Society of London in 1919. Eight joined in May of that year and then in June a further two were admitted. By February 1922 there were 21 female Fellows. The Geological Society had opened its doors to women and, after an initial rush, there was a slow trickle. However, there were a number of highly regarded female geologists before this time, and several of them received grants, medals and, indeed, submitted papers, although they were not always permitted to read these themselves. Some of the first female Fellows have disappeared without trace, but the contributions of others are significant. As well as being educationalists, they were expert in many different areas of geology, with palaeontology and stratigraphy featuring strongly. Few, however, stayed on in this male-dominated arena once they married and had children. It seems there was no common reason for these women to seek membership of the Geological Society, other than their love of geology, but membership brought them recognition and status. They led the way as role models for future female Fellows and were the first of many women to play a significant role in the Geological Society’s history.
Tumey Sandstone (Tertiary), Fresno County, California
Chemometric differentiation of crude oil families in the San Joaquin Basin, California
Seismological Society of America members: June 8, 1956
Archibald Geikie: his influence on and support for the roles of female geologists
Abstract This chapter explores the interaction between Archibald Geikie and female geologists in their many different roles and within the social context of his life and time (1835–1924). The roles adopted by female geologists altered around 1875 when there was a change in the educational and legal background. Geikie’s attitude to female fieldwork and research publications changes through time too. His life is divided up into five different stages according to his ability to support and influence female geologists in their roles as researchers, lecturers, wife assistants and students. Case studies of both single and married women are explored looking at the influence and interaction they had with Archibald Geikie. They include Maria Ogilvie Gordon, Catherine Raisin, Annie Greenly, Gertrude Elles, Ethel Skeat and Ethel Wood. Geikie seems to have accepted most of the roles that women undertook and supported them wherever he could.
Evolution of Eocene-Miocene Sedimentation Patterns in Parts of Northern Egypt
Seismological Society of America members: June 30, 1958
Paleoenvironment of the Quilchena flora, British Columbia, during the Early Eocene Climatic Optimum
The core area of fruit-tree cultivation: central Jordan Valley (Levant), ca. 7000 BP
Heirs of the revolution: X-ray diffraction and the birth of the Mineralogical Society of America
Book Reviews, Interesting Publications, Notice, Author Guidelines, Treasure’s Report, Notes on Contributors, HESS matters
An engineering study of the southern California earthquake of July 21, 1952 and its aftershocks
Large Eighteenth–Nineteenth Century Earthquakes in Western Gulf of Corinth with Reappraised Size and Location
Evaporite facies of the Michigan Basin
ABSTRACT The Michigan Basin is one of the world’s important sedimentary basins that contains significant quantities of evaporites. Here, evaporites are found in deposits of Ordovician through Mississippian age rocks; however, most of the thick evaporite accumulations occur in Silurian and Devonian intervals. Halite is most significant in the Silurian Salina Group, with a maximum aggregate thickness of halite exceeding 650 m (2150 ft). During the earliest evaporite deposition in the Salina Group (A-1 Evaporite), sylvite was widely deposited in the north-central portion of the basin within the upper 91.4 m (300 ft) of the formation. Devonian salt is also present in the north-central portion of the basin in the Horner Member of the Lucas Formation, where maximum aggregate net thickness of halite reaches 125 m (410 ft). Recrystallization of much of the halite obscures the primary depositional crystal geometry; however, some well-preserved beds do show crystal growth that is interpreted as bottom-growth chevrons, which likely suggest shallow-water deposition. Throughout the rest of the Michigan Basin, in both space and time, the evaporite phase deposited is CaSO 4 . In the shallowest portions of the Mississippian Michigan Formation, the sulfate mineral phase is gypsum; everywhere else in the basin, all the evaporitic sulfate deposits are anhydrite. Although the dehydration of the gypsum to anhydrite has slightly altered the original depositional morphology, some primary growth geometry is still evident. Subtidal and sabkha morphologies can be documented in all the anhydrite/gypsum deposits of the Michigan Basin. Based on historic production, evaporite minerals have added an estimated $15.5 billion (in 2013 dollars) to the industrial mineral economy of Michigan since the first commercial development in the 1860s.
Mabel Elizabeth Tomlinson and Isabel Ellie Knaggs: two overlooked early female Fellows of the Geological Society
Abstract The first female Fellows of the Geological Society of London were elected in May 1919. Brief biographies were documented by Burek in 2009 as part of the celebrations for the bicentenary of the Geological Society. While some of those women were well known (e.g. Gertrude Elles and Ethel Wood), others had seemingly been forgotten. In the decade since that publication, information has come to light about those we knew so little about. There are, however, still some details evading research. From 1919 until 1925, 33 women were elected FGS, including Isobel Ellie Knaggs (1922) and Mabel Tomlinson (1924) . Mabel Tomlinson had two careers, and is remembered both as an extraordinary teacher and a Pleistocene geologist. She was awarded the Lyell Fund in 1937 and R.H. Worth Prize in 1961, one of only 13 women to have received two awards from the Geological Society. She inspired the educational Tomlinson–Brown Trust. Isabel Knaggs was born in South Africa and died in Australia but spent all her school, university and working years in England. She made significant contributions to crystallography, working with eminent crystallography scientists while remaining a lifelong FGS. The achievements of Tomlinson and Knaggs are considerable, which makes their relative present-day obscurity rather puzzling.