搜索结果: 16-30 共查到“理学 Pleistocene”相关记录30条 . 查询时间(0.367 秒)
The sedimentary sequence recovered from the Voka outcrops,northeastern Estonia:implications for late Pleistocene stratigraphy
last ice age chrono and palynostratigraphy northeastern Estonia Voka site
2009/10/21
New palaeoenvironmental and geological data, which may be integrated with the results from the neighbouring regions,were collected from two well-exposed continuous outcrops in the vicinity of Voka vil...
Ordovician sponges (Porifera) and other silicifications from Baltica in Neogene and Pleistocene fluvial deposits of the Netherlands and northern Germany
Baltica Eridanos River erratics Ordovician Porifera silicifications
2009/10/21
Fluvial deposits of Miocene to Early Pleistocene age in Germany and the Netherlands were laid down in the delta of the Eridanos River System, but the exact provenance of this material continues to be ...
Pleistocene neotectonics and Fe-mineralizations in the Ahnet-Mouydir area (northern margin of the Hoggar Massif,Algerian Sahara)
Algeria Hoggar Pleistocene Neotectonics Terraces Sedimentary dykes
2009/10/20
Strongly mineralized lithologies were found in 4 different depositional settings along the northern margin of the Hoggar Massif in southern Algeria: (1) Pleistocene fluvial terraces, (2) pebble-filled...
Climate variability of the tropical Andes since the late Pleistocene
Climate variability tropical Andes late Pleistocene
2010/1/28
Available proxy records witnessing palaeoclimate of the tropical Andes are comparably scarce. Major implications of palaeoclimate development in the humid and arid parts of the Andes are briefly summa...
Late Pleistocene-Holocene geochemical history inferred from Lake Tecocomulco sediments, Basin of Mexico, Mexico
Late Quaternary geochemistry paleohydrology Lake Tecocomulco Basin of Mexico
2017/8/9
This paper presents stratigraphy, mineralogy, multi-element geochemistry, organic and inorganic carbon contents in the sediments along a 255 cm long depth profile from Lake Tecocomulco in the north-ea...
Late Pleistocene palaeoproductivity patterns during the last climatic cycle in the Guyana Basin as revealed by calcareous nannoplankton
last climatic cycle Guyana Basin revealed calcareous nannoplankton
2010/9/28
Variations in the assemblage and abundance of coccoliths reveal changes in oceanic and atmospheric dynamics in the Guyana Basin over the last climatic cycle, mainly linked to latitudinal variations in...
Spatial distribution of Pleistocene/Holocene warming amplitudes in Northern Eurasia inferred from geothermal data
Pleistocene/Holocene Northern Eurasia geothermal data
2008/11/5
We analyze 48 geothermal estimates of Pleistocene/Holocene warming amplitudes from various locations in Greenland, Europe, Arctic regions of Western Siberia, and Yakutia. The spatial distribution of t...
Detecting human impacts on the flora, fauna, and summer monsoon of Pleistocene Australia
human impact flora fauna summer monsoon Pleistocene Australia
2008/11/5
The moisture balance across northern and central Australia is dominated by changes in the strength of the Australian Summer Monsoon. Lake-level records that record changes in monsoon strength on orbit...
Predicting Pleistocene climate from vegetation in North America
pleistocene climate vegetation North America
2008/11/4
Climates at the Last Glacial Maximum have been inferred from fossil pollen assemblages, but these inferred climates are colder for eastern North America than those produced by climate simulations. It ...
Revisiting silicate authigenesis in the Pliocene–Pleistocene Lake Tecopa beds, southeastern California: Depositional and hydrological controls
saline, alkaline lake, Pliocene–Pleistocene, zeolite, depositional facies, authigenic minerals
2011/11/14
The Pliocene–Pleistocene Lake Tecopa beds present a well-documented example of authigenic silicate diagenesis in an ancient saline, alkaline lake environment. Controls on authigenic mineral formation ...
Late Pleistocene glaciation of the Hulifang Massif of Gongwang mountains
in Yunnan Province
2007/8/24
Late Pleistocene glaciation was restricted to only a few high mountains in eastern China. The Gongwang mountains constitute one of the typical places once glaciated. Geomorphic mapping of ...
Diagenesis of Dioctahedral and Trioctahedral Smectites from Alternating Beds in Miocene to Pleistocene Rocks of the Niigata Basin, Japan
Chlorite-Smectite Clay Mineral Diagenesis C-S Geothermometer Illite-Smectite I-S Niigata Basin Saponite
2011/12/5
Abstract: Clay mineral diagenesis in the Niigata basin is documented by mineralogical and chemical analysis of clay minerals from cuttings from the Shinkumoide SK-1D (SSK-1D) well which is characteriz...
About Presence of Urocythereis britannica Athersuch in İzmit Bay (NW Turkey) in Pleistocene
Urocythereis brittanica Ostracoda Foraminifera Gulf of İ zmit Pleistocene Quaternary
2010/4/1
In this study, 164 samples that were collected by drilling from one on land and eight in the sea were investigated in İzmit Bay. Ostracod species were observed in 126 samples and only in 31 of th...
MINERALOGIC VARIATIONS IN A PLEISTOCENE HIGH-RESOLUTION EOLIAN RECORD FROM THE OWEN RIDGE, WESTERN ARABIAN SEA (SITE 722): IMPLICATIONS FOR SEDIMENT SOURCE CONDITIONS AND MONSOON HISTORY
MINERALOGIC VARIATIONS SOURCE CONDITIONS MONSOON HISTORY
2011/11/8
Bulk mineralogy of the terrigenous fraction of 99 samples from ODP Site 722 on the Owen Ridge, western Arabian Sea, has been determined by x-ray diffraction, using an internal standard method. The sam...
Differentiation of Pleistocene Deposits in Northeastern Kansas by Clay Minerals
Pleistocene Deposits Northeastern Kansas Clay Minerals
2011/11/17
Abstract: Seventy-four samples from eight stratigraphic sections of lower Pleistocene glacial and glaciofluvial deposits in Doniphan County, extreme northeastern Kansas, were analyzed using X-ray diff...