Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.palaeo.2006.10.016 |
Late Oligocene-Early Miocene paleosols of distal fluvial systems, Ebro Basin, Spain | |
Hamer, J. M. M.; Sheldon, N. D.; Nichols, G. J.; Collinson, M. E. | |
通讯作者 | Hamer, J. M. M. |
来源期刊 | PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
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ISSN | 0031-0182 |
出版年 | 2007 |
卷号 | 247期号:3-4页码:220-235 |
英文摘要 | The study of paleosols can be a vital tool in the paleoenvironmental interpretation of continental deposits because their physical and chemical characteristics are a reflection of variations in aspects of soil formation. Changes in paleosol characteristics can be used to determine the architecture and nature of parent material, paleosol maturity, topography, climate and soil-forming organisms (including vegetation cover) on the ancient floodplain, and can be utilized to recreate a palaeocatena. Furthermore, paleosols can provide quantitative data on paleoclimate where other sources, such as organic matter and pedogenic carbonate are absent. Late Oligocene-Early Miocene strata exposed in the Ebro Basin, Spain, have been identified as proximal alluvial fan, fluvial and lacustrine continental facies. In parts of the distal fluvial system pedogenically altered channel and overbank deposits interfinger with ephemeral lacustrine facies. Three main paleosol types developed in these sediments and have been described and compared to modem soils: Entisol-like (early successional soils), Inceptisol-like (young soils) and Alfisol-like (open woodland soils). Paleoenvironmental reconstructions suggest a mosaic of ecotypes with areas of open woodland composed of shrubs, herbs and small trees and other plants of low stature, and with each ecotype being controlled primarily by fluctuating paleohydrological conditions. From field observations and geochemical analysis the climate was found to be humid continental (mean annual temperature (MAT) 10-14 degrees C +/- 4 degrees C, mean annual precipitation (MAP) 450-830 mm yr(-1) 200 mm yr(-1)). These results indicate that climatic conditions were wetter than the present-day Ebro Basin (MAT 14 degrees C, MAY 320 mm yr(-1)), and differ from previous interpretations of an and to semi-arid environment based on sedimentological criteria alone. (C) 2006 Elsevier B.V. All rights reserved. |
英文关键词 | paleosols Ebro Basin Oligocene-Miocene paleoclimate |
类型 | Article |
语种 | 英语 |
国家 | England |
收录类别 | SCI-E |
WOS记录号 | WOS:000246167300003 |
WOS关键词 | NE-SPAIN ; SEDIMENTARY-ROCKS ; NORTHEAST SPAIN ; FANS ; BOUNDARY ; BURIAL ; MODELS ; OREGON ; SUITES ; SOILS |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology |
WOS研究方向 | Physical Geography ; Geology ; Paleontology |
来源机构 | University of London |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/155598 |
作者单位 | (1)Univ London, Royal Holloway & Bedford New Coll, Dept Geol, Egham TW20 0EX, Surrey, England |
推荐引用方式 GB/T 7714 | Hamer, J. M. M.,Sheldon, N. D.,Nichols, G. J.,et al. Late Oligocene-Early Miocene paleosols of distal fluvial systems, Ebro Basin, Spain[J]. University of London,2007,247(3-4):220-235. |
APA | Hamer, J. M. M.,Sheldon, N. D.,Nichols, G. J.,&Collinson, M. E..(2007).Late Oligocene-Early Miocene paleosols of distal fluvial systems, Ebro Basin, Spain.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,247(3-4),220-235. |
MLA | Hamer, J. M. M.,et al."Late Oligocene-Early Miocene paleosols of distal fluvial systems, Ebro Basin, Spain".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 247.3-4(2007):220-235. |
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