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paleoclimatic indices

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Fossil insects from Quilchena, selected as <b>paleoclimatic</b> <b>indicators</b>. (A–E) ...
Published: 02 February 2016
Fig. 11. Fossil insects from Quilchena, selected as paleoclimatic indicators. (A–E) Forewings of temperate associated insects. (F–H) Insects associated with warmer, lower latitudes. (A) Q-0041, a polystoechotid giant lacewing, Polystoechotities sp. A. (B) Q-0096, a panorpoid scorpionfly
Series: SEPM Short Course Notes
Published: 01 January 1986
DOI: 10.2110/scn.86.18.0003
EISBN: 9781565762473
... the distributions of sedimentary paleoclimatic indicators, such as coals. The problems with this approach are numerous. In early studies, the paleoclimatic patterns appeared to make very little sense because they were reconstructed on modern continental positions. Even after the acceptance of continental drift...
Series: SEPM Short Course Notes
Published: 01 January 1986
DOI: 10.2110/scn.86.18
EISBN: 9781565762473
Series: SEPM Short Course Notes
Published: 01 January 1986
DOI: 10.2110/scn.86.18.0017
EISBN: 9781565762473
... Abstract Paleoclimatic indicators, including the economic deposits of interest to this course, range from the very specific to the very general. Latentes, for example, seem to indicate very specific conditions of temperature and precipitation. In contrast, biogeographic patterns are very...
Journal Article
Journal: Geology
Published: 01 January 1994
Geology (1994) 22 (1): 23-26.
...Carlo Baroni; Giuseppe Orombelli Abstract Penguins are sensitive indicators of the Antarctic climate and of the environmental parameters that limit their presence and distribution. Paleoenvironmental data, obtained from the study of abandoned penguin rookeries ( Pygoscelis adeliae ) along...
Journal Article
Journal: PALAIOS
Published: 01 October 1989
PALAIOS (1989) 4 (5): 480-486.
Journal Article
Published: 01 February 1992
Canadian Journal of Earth Sciences (1992) 29 (2): 296-300.
...Y. Wang; M. E. Evans; T. C. Xu; N. Rutter; Z. Ding; X. M. Liu Abstract Two geophysical measurements have been widely used as paleoclimatic indicators: oxygen-isotope ratios from deep-sea cores and magnetic susceptibility of loess sediments. Both types of record have been shown to possess climatic...
Series: GSA Special Papers
Published: 01 January 2008
DOI: 10.1130/2008.2435(03)
... presence-absence placed Florissant in a no-analog taxonomic space surrounded by North American warm temperate broad-leaved forests, Mexican humid pine-oak forests, and subtropical moist forests from Florida, Mexico, and Argentina. The site most similar to Florissant, as indicated by the mean of Euclidean...
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Journal Article
Journal: GSA Bulletin
Published: 01 August 1993
GSA Bulletin (1993) 105 (8): 1008-1018.
... and the less-than-2-m incision by hillslope runoff adjacent to these deposits, however, indicate that extremely low denudation rates have occurred on resistant volcanic hillslopes in the southern Great Basin during Quaternary time. Geological Society of America 1993 ...
Journal Article
Published: 01 January 1985
Journal of Paleontology (1985) 59 (1): 8-20.
Journal Article
Journal: Paleobiology
Published: 01 January 2005
Paleobiology (2005) 31 (3): 434-444.
...Howard J. Falcon-Lang Abstract Quantitative analysis of growth rings in pre-Quaternary fossil woods is commonly used as a paleoclimatic indicator. In this paper, a global analysis of the relationship between climate and growth ring parameters in modern trees is presented that, in part, invalidates...
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Series: SEPM Short Course Notes
Published: 01 January 1986
DOI: 10.2110/scn.86.18.0113
EISBN: 9781565762473
... (1964), Drewry et al. (1974), and Hallam (1984). For the most part, the zonal model is adequate for describing the distribution of terrestrial paleoclimatic indicators. However, attempts to define the zones in which the deposits should occur have been confounded by “noise” in the data. Some of the noise...
Journal Article
Journal: GSA Bulletin
Published: 01 September 2016
GSA Bulletin (2016) 128 (9-10): 1543-1554.
... of the Columbia River Basalts were identified on the basis of pedogenic features such as horizon development, root traces, and saprolitization, and they were studied as paleoclimatic indicators. Relationships between the ages of the paleosols and their clay-mineral compositions suggest that pedogenic processes...
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Series: GSA Field Guide
Published: 01 January 2005
DOI: 10.1130/2005.fld006(16)
EISBN: 9780813756066
... and geochemical paleoclimatic indicators, paleoeco-logical data, and characteristic stratal architecture that provide glimpses into the evolution of basins linked to global- and continental-scale tectonic events and processes, and the establishment of a mosaic of continental paleoecosystems. This field trip...
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Journal Article
Published: 01 June 1987
Canadian Journal of Earth Sciences (1987) 24 (6): 1185-1198.
...William W. Locke Abstract The Cape Dyer area of easternmost Baffin Island was isolated from the Laurentide Ice Sheet by the fiords of Cumberland Peninsula. Accordingly, the glacial chronology at Cape Dyer is that of local ice only and is indicative of the local climate throughout the late...
Journal Article
Journal: GSA Bulletin
Published: 01 May 2016
GSA Bulletin (2016) 128 (5-6): 739-751.
... the climate impact on regional weathering patterns. Whole-rock major- and trace-element geochemistry, and X-ray diffraction mineralogy data suggest that sample compositions, and resultant calculated values of most weathering indices, are dominated by chemical weathering from a source akin to the average upper...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2003
GSA Bulletin (2003) 115 (1): 3-20.
.... 11 Ma. Thus, the Thakkhola graben stratigraphic record suggests that uplift of the southern Tibetan plateau and the onset of the Asian monsoon as inferred from paleoclimatic indicators were not directly related in a simple way. The lacustrine lithofacies association comprises mudstone (C1...
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Journal Article
Journal: GSA Bulletin
Published: 01 January 2011
GSA Bulletin (2011) 123 (1-2): 21-39.
...) for the North Atlantic. Trends in clay mineralogy and macroscopic characteristics of the Sangamon, specifically, the down-valley increase in kaolinite and vermiculite–hydroxy-interlayered vermiculite and decrease in soil structure, indicate a down-valley paleoclimatic gradient of decreasing seasonality...
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Journal Article
Journal: GSA Bulletin
Published: 01 November 2008
GSA Bulletin (2008) 120 (11-12): 1378-1407.
... of recent climate models. Sixteen new radiocarbon ages and recently acquired optically stimulated luminescence ages indicate that Peoria Loess deposition in Nebraska occurred between ca. 25,000 cal yr B.P. and ca. 13,000 cal yr B.P. After ca. 13,000 cal yr B.P. a period of pedogenesis began, represented...
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Journal Article
Journal: GSA Bulletin
Published: 01 December 1999
GSA Bulletin (1999) 111 (12): 1861-1875.
...Daniel R. Muhs; John N. Aleinikoff; Thomas W. Stafford, Jr; Rolf Kihl; Josh Been; Shannon A. Mahan; Scott Cowherd Abstract Loess in eastern Colorado covers an estimated 14 000 km 2 , and is the westernmost part of the North American midcontinent loess province. Stratigraphic studies indicate...