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Past environments

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Series: Geological Society, London, Special Publications
Published: 01 January 2002
DOI: 10.1144/GSL.SP.2002.192.01.13
EISBN: 9781862394407
... that the present is not always a reliable key to the past, because our short ‘Holocene’ is such a special case in geological history. But Lucien Cayeux had recommended a differentiated approach to actualism as early as 1941. Single-grain research marked the beginning of micropalaeontology. Before 1920...
Journal Article
Journal: Geology
Published: 01 June 1976
Geology (1976) 4 (6): 361-364.
Journal Article
Journal: Palynology
Published: 01 July 2015
Palynology (2015) 39 (2): 270-287.
... resistant, thermophilous shrubs and trees with a preference for subtropical to tropical climate, and never dominate in cold climatic regions ( Francis 1983 ; Vakhrameev 1991 ). It was also adapted to semi-arid and arid low-lying water-margin environments ( Abbink et al. 2004 ; Doyle et al. 1982...
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Journal Article
Journal: Geology
Published: 01 March 2015
Geology (2015) 43 (3): 203-206.
... in triggering past climate changes. However, the mechanisms for sun-climate links remain a topic of debate. Here we present a high-resolution summer sea-surface temperature (SST) record covering the past 9300 yr from a site located at the present-day boundary between polar and Atlantic surface-water masses...
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Journal Article
Published: 01 October 2018
Italian Journal of Geosciences (2018) 137 (3): 478-489.
... they show angular unconformity ( Fig. 3e ) that can be referred to a cross-bedding, as it is common in fluvial and beach environments, rather than to a tectono-metamorphic deformation. Beds are very pure, without the thin layers or films rich in white mica that are typical in the Tabular White Quartzites...
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Journal Article
Published: 28 June 2018
Journal of the Geological Society (2018) 175 (5): 705-715.
... fauna that inhabited a relatively deep water environment at the offshore margin of a carbonate platform, resembling the setting of the underlying Wheeler and Marjum formations. However, the Weeks fauna differs significantly in composition from the other remarkable biotas of the Cambrian Series 3 of Utah...
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Journal Article
Published: 29 May 2013
Geological Magazine (2013) 150 (5): 945-951.
... of the environmental settings of previous aglaspidid findings suggests that these arthropods preferentially inhabited shallow-water environments, which may partially explain their limited fossil record. The Aglaspidida (used in the sense of the ‘Aglaspidida sensu stricto ’ of Van Roy, 2006...
FIGURES
Journal Article
Journal: Geology
Published: 01 September 2005
Geology (2005) 33 (9): 705-708.
...-resolution carbon isotope time series, covering the past 7 m.y., derived from eolian deposits on the Chinese Loess Plateau. The data indicate three intervals of significant C 4 plant expansions within the semiarid monsoonal region of East Asia (ca. 2.9–2.7 Ma, 1.3–0.9 Ma, and 0.6 Ma–present...
FIGURES
Journal Article
Journal: PALAIOS
Published: 01 November 2011
PALAIOS (2011) 26 (11): 743-753.
...CHENG QUAN; YU-SHENG (CHRISTOPHER) LIU; TORSTEN UTESCHER Abstract The timing of the development of the East Asian monsoon in the geologic past is critically important for paleoclimatological studies, yet few quantitative data are available. Based on palynomorphs from six formations, supplemented...
FIGURES
Journal Article
Journal: Geology
Published: 01 April 2017
Geology (2017) 45 (4): 359-362.
... velocities) may also impact the OPE. Using the sediments of a small proglacial lake on the southern Tibetan Plateau, we found that over the past 2.5 k.y., a weakened OPE occurred during three historical cool periods that coincided with regional glacier advances defined by moraine ages. Thus, we interpret...
Journal Article
Journal: Geology
Published: 01 June 2015
Geology (2015) 43 (6): 515-518.
... ± 0.7 mm/yr), totaling ∼0.30 ± 0.04 m over the past 60 yr. We analyzed six time slices of shoreline position over the past 118 yr at 29 islands of Funafuti Atoll to determine their physical response to recent sea-level rise. Despite the magnitude of this rise, no islands have been lost, the majority...
FIGURES
Series: Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.263.01.09
EISBN: 9781862395114
... operationally for about 30 years, with ongoing groundwater level monitoring. In the mid 1990s the Environment Agency undertook a review of the impact of the Fylde abstractions, given concerns about the sustainability of the original abstraction licence and the environmental impact ( Seymour et al . 1998...
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Journal Article
Journal: Geology
Published: 01 June 2014
Geology (2014) 42 (6): 467-470.
... proportional to the magnetic field intensity ( Masarik and Beer, 1999 ), allowing us to reconstruct past geomagnetic field intensity variations using 10 Be concentrations recorded in sedimentary archives such as marine sediment ( McHargue et al., 1995 ), polar ice cores ( Raisbeck et al., 2006 ), and loess...
FIGURES
Journal Article
Published: 01 May 2013
Vadose Zone Journal (2013) 12 (2): vzj2012.0114.
... of soil, consistent with other soil sampling schemes in the UK, including the British Geological Survey’s Geochemical Baselines Surveyof the Environment and sampling reported by Bellamy et al. (2005) from the National Soil Inventory soil survey. This is important with regards to data interpretation...
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Series: GSA Reviews in Engineering Geology
Published: 01 January 2013
DOI: 10.1130/2013.4121(14)
EISBN: 9780813758213
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Journal Article
Journal: Palynology
Published: 03 July 2017
Palynology (2017) 41 (3): 339-350.
... and shrubs, including extinction of the Arecaceae and other taxa, coincident with an increase in Poaceae (grasses) and ferns in the cores, indicate deforestation by people. This study provides new documentation of past environments, deforestation and agricultural activity across a wide range of Rapa...
Series: GSA Special Papers
Published: 01 January 2006
DOI: 10.1130/2006.2401(08)
... Our goal is to use the observed modern and recent depositional environments and their sedimentary attributes as tools for understanding past depositional environments, as interpreted from facies analysis of older sedimentary sequences. We will describe modern and very recent sedimentary...
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Series: Geological Society, London, Special Publications
Published: 01 January 2009
DOI: 10.1144/SP320.1
EISBN: 9781862395688
... Abstract Periglacial and paraglacial (cold-climate) environments, located outside the margins of past and present ice sheets but responding to similar climate forcings, are key to identifying climate change effects upon the Earth system ( Warburton 2007 ). These environments are relicts of cold...
Journal Article
Published: 01 January 2004
Geological Magazine (2004) 141 (1): 107-108.
...Bryn Hubbard The framework for the 16-chapter volume is presented in the initial two chapters, entitled ‘Glacial Environments –Modern and Past’ and ‘Global Glacial Chronologies and Causes of Glaciation’. The latter provides a useful summary of glacial activity throughout the Earth’s history...
Series: Geological Society, London, Special Publications
Published: 01 January 2000
DOI: 10.1144/GSL.SP.2000.175.01.01
EISBN: 9781862394230
... and spatial scales. Much can be learned from the sedimentary and archaeological record about the way in which coasts and estuaries have varied in the past, the way in which man has responded to or caused such changes, and with what consequences, both for himself and for the ‘natural’ environment. Although...