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Cynthia Pit

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Journal Article
Published: 01 May 2005
Journal of Sedimentary Research (2005) 75 (3): 339–349.
...Steven G. Driese; Lee C. Nordt; Warren C. Lynn; Cynthia A. Stiles; Claudia I. Mora; Lawrence P. Wilding Abstract A suite of Vertisols (clay-rich soils with high shrink-swell potential) were examined across a climosequence (climatic transect) in twelve soil pits from the Coast Prairie of Texas...
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Series: Geological Society, London, Special Publications
Published: 01 January 2008
DOI: 10.1144/SP300.6
EISBN: 9781862395480
... of the surrounding country, by small streams in valleys cut deep down to the clay bottoms, with springs breaking frequently about the 300 feet contour. The gravel top is flat over large areas; much broken by old gravel pits and spoil heaps ( Qvist 1958 ) This one small piece explicitly recognizes the importance...
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Journal Article
Published: 18 April 2013
Canadian Journal of Earth Sciences (2013) 50 (3): 315–323.
...Richard L. Cifelli; Cynthia L. Gordon; Thomas R. Lipka Abstract Multituberculates, though among the most commonly encountered mammalian fossils of the Mesozoic, are poorly known from the North American Early Cretaceous, with only one taxon named to date. Herein we describe Argillomys marylandensis...
FIGURES
Journal Article
Journal: Geology
Published: 01 April 2003
Geology (2003) 31 (4): 331–334.
...Cynthia A. Stiles; Claudia I. Mora; Steven G. Driese; Amelia C. Robinson Abstract Mass-balance relationships of 10 major elements in a Vertisol climosequence and chronosequence formed on alluvial terraces on the Texas Gulf Coastal Plain indicate that the soils develop characteristic element...
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Journal Article
Journal: Geology
Published: 01 October 2001
Geology (2001) 29 (10): 943–946.
...Cynthia A. Stiles; Claudia I. Mora; Steven G. Driese Abstract The total Fe content of pedogenic iron-manganese (Fe-Mn) nodules taken from a Vertisol climosequence on the Texas Gulf Coastal Plain correlates with mean annual precipitation (MAP, r 2 = 0.92). No significant trend of total Fe (Fe TOT...
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Journal Article
Published: 01 September 2001
European Journal of Mineralogy (2001) 13 (5): 863–870.
...Marija GAJDARDZISKA-JOSIFOVSKA; Richard G. McCLEAN; Marvin A. SCHOFIELD; Cynthia V. SOMMER; William F. KEAN Abstract Based on transmission electron microscopy and electron diffraction observations, we report the discovery of nanocrystalline botanical magnetite in iron-rich extracts from disrupted...
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Journal Article
Journal: AAPG Bulletin
Published: 01 September 2013
AAPG Bulletin (2013) 97 (9): 1503–1520.
...Cynthia C. Sawatzky; Georgia Pe-Piper Abstract Quartz is the principal framework mineral in clastic sediment reservoirs. In a frontier basin with sparse wells, the source of quartz in sandstones may be a predictor of the availability of medium- to coarse-grained quartz sand from plutonic sources...
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Journal Article
Published: 01 December 2009
Journal of Sedimentary Research (2009) 79 (12): 906–917.
...Cynthia M. Liutkus Abstract Rhizoliths, root casts, and rhizocretions are prolific in the geologic record, and their morphology and isotopic signatures can be important indicators of paleoenvironment and paleoclimate. In a semiarid playa in Nevada, the calcite plant encrustations preserved...
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Journal Article
Published: 18 August 2001
Canadian Journal of Earth Sciences (2001) 38 (8): 1191–1204.
...Cynthia Dusel-Bacon; John M. Murphy Abstract We present an apatite fission-track (AFT) study of five plutonic rocks and seven metamorphic rocks across 310 km of the Yukon–Tanana Upland in east-central Alaska. Samples yielding ∼40 Ma AFT ages and mean confined track lengths > 14 μm with low...
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Journal Article
Published: 11 July 2002
Canadian Journal of Earth Sciences (2002) 39 (6): 1013–1051.
...Cynthia Dusel-Bacon; Marvin A. Lanphere; Warren D. Sharp; Paul W. Layer; Vicki L. Hansen Abstract We present new 40 Ar/ 39 Ar ages for hornblende, muscovite, and biotite from metamorphic and plutonic rocks from the Yukon–Tanana Upland, Alaska. Integration of our data with published 40 Ar/ 39 Ar...
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Journal Article
Published: 24 April 2013
Canadian Journal of Earth Sciences (2013) 50 (8): 826–846.
...Cynthia Dusel-Bacon; Warren C. Day; John N. Aleinikoff Abstract We report the results of new mapping, whole-rock major, minor, and trace-element geochemistry, and petrography for metaigneous rocks from the Mount Veta area in the westernmost part of the allochthonous Yukon–Tanana terrane (YTT...
Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP376.14
EISBN: 9781862396449
... of taxa at that single site, practical limitations and the scope of the project prevented such an approach. Quarry test pits were excavated into beds considered likely to contain plant fossils, followed by more extensive quarrying if warranted. Standard dimensions for a quarry were 1 m (width)×0.5 m...
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Series: Geological Society, London, Special Publications
Published: 01 January 2010
DOI: 10.1144/SP343.7
EISBN: 9781862395916
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Published: 01 January 2019
DOI: 10.1144/SP473.9
EISBN: 9781786204189
... the archaeological element was undertaken by Dr Cynthia Poole of the Oxford Institute of Archaeology and the geotechnical work was undertaken by Nick Lambert and the present author. The geotechnical work involved exploratory pits dug in 1982 at various locations along the north wall to determine the shape...
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Series: GCSSEPM
Published: 01 June 1991
DOI: 10.5724/gcs.90.11.0141
EISBN: 978-0-9836097-2-8
... of relative lowstand of sea level rather than a time of maximum marine transgression. The sedimentary change across this boundary and the paleosol indicate a change from perhaps midshelf clays to shoreline or higher marsh and/or swamp deposits. The Forest Hill-Yazoo contact is also present in a sand pit...
Journal Article
Published: 01 May 2004
Vadose Zone Journal (2004) 3 (2): 602–623.
... sections emphasize field observations of the hydrologic and mechanical properties of the deposits, and the textures observed in thin section. Fig. 2. Stratigraphic section of the Bishop Tuff in the study area. Fig. 5. Details of the Borrow Pit. (A) Vertical outcrop face of the southern...
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Journal Article
Journal: AAPG Bulletin
Published: 01 October 1984
AAPG Bulletin (1984) 68 (10): 1433–1466.
... Germany: L Schroder, Niedersachsisches Landesamt fur Bodenforschung, Hannover. North Sea and northwestern Europe: Cynthia Kat, Amoco (UK) Exploration Co., London, United Kingdom. Reports prepared by Petroconsultants S.A., Geneva, Switzerland, were used as reference. The writer is especially grateful...
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Journal Article
Journal: AAPG Bulletin
Published: 01 August 1990
AAPG Bulletin (1990) 74 (8): 1165–1182.
... of the subdued Cardium paleovalleys are found in the Irish Sea basin, where the offshore extensions of Pleistocene incised buried channels are represented by a series of aligned pits and troughs ( Devoy, 1983 ). These are similar to the suggested courses of the Cynthia and Sinkhole paleovalleys. Some...
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Series: SEPM Special Publication
Published: 01 January 2002
DOI: 10.2110/pec.02.73.0295
EISBN: 9781565761957
... ). Relatively light δ 18 O values (average δ 18 O = −3.68‰ PDB; s.d. = 0.74; n = 4) and δ 13 C (average δ 13 C = 0.05‰; s.d. = 0.24; n = 4), however, suggest that they do not record a strictly evaporitic, sublacus-trine diagenetic history. Shallow auger-core holes and hand-dug soil pits show...
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Series: GSA Field Guide
Published: 01 January 2007
DOI: 10.1130/2007.fld009(04)
EISBN: 9780813756097
... on these structures are brown and somewhat pitted. “Tiny normal joints” ( McPhie et al., 1993 ) with 1-cm-spacing radiate a few cm inward from the margins of the shells; the interior of the shells is more massive, jointed at 10 cm intervals. Pseudo-pillows ( Walker, 1992 ) can be seen at the very base at the left end...
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