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首页> 外文期刊>Palaios: An International Journal of the Society of Economic Paleontologists & Mineralogists >PALEOSOLS AND ICHNOFOSSILS OF THE UPPER PENNSYLVANIAN-LOWER PERMIAN MONONGAHELA AND DUNKARD GROUPS (OHIO, USA): A MULTI-PROXY APPROACH TO UNRAVELING COMPLEX VARIABILITY IN ANCIENT TERRESTRIAL LANDSCAPES
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PALEOSOLS AND ICHNOFOSSILS OF THE UPPER PENNSYLVANIAN-LOWER PERMIAN MONONGAHELA AND DUNKARD GROUPS (OHIO, USA): A MULTI-PROXY APPROACH TO UNRAVELING COMPLEX VARIABILITY IN ANCIENT TERRESTRIAL LANDSCAPES

机译：上宾夕法尼亚州较低的二叠纪美纳贺贺和敦地群体（俄亥俄州，美国）的古玉米醇和ICHNOFOSES：一种多功能地探讨古代陆地景观的复杂变异性的多功能方法

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The upper Monongahela and lower Dunkard groups of southeastern Ohio include abundant paleosols containing ichnofossils as well as vertebrate, invertebrate, and plant body fossils. These paleosols formed on diverse Late Pennsylvanian to Early Permian landscapes in an alluvial setting. This study investigated small-scale lateral and vertical variability of the paleosols that formed at the distal edge of the Dunkard Basin. Three detailed, 32-m thick stratigraphic sections across a 70 m outcrop were measured in eastern Athens County, Ohio. Seven pedotypes representing soil formation in nine subenvironments were identified through bulk geochemical, clay mineralogical, and petrographic analyses as well as a detailed study of the ichnofossils, body fossils, and macromorphological paleosol properties. Ichnofossils were abundant and included rhizoliths, actively to passively filled burrows, and coprolites. These ichnofossils were produced by various plants, larval and adult arthropods, and micro-to macro-vertebrates. Body fossils within the paleosols included micro-and macro bone fragments and teeth, compression plant fossils, ostracodes, and gastropods. Vertical transitions among the subenvironments were due to both fluvial channel migration and climatic changes. Precipitation was seasonally distributed with a range of mean annual precipitation (MAP) from 300-1000 mm/yr through the section. This study demonstrates that by investigating the small-scale lateral and vertical variations in paleosols, finer resolution paleoclimatic, paleoenvironmental, and paleoecological reconstructions are possible.
机译：俄亥俄州东南部的上部Monongahela和较低的Dunkard组包括含有ICHNOFOSESS以及脊椎动物，无脊椎动物和植物体化石的丰富的古溶症。这些古玉米醇在不同于宾夕法尼亚州的初期狂热的景观中形成。本研究研究了在达格德盆地的远端边缘形成的古溶胶的小规模横向和垂直变化。在俄亥俄州东部雅典县，测量了30米露头的三个详细的32米厚的地层部分。通过散装地球化学，粘土矿物学和岩体分析来鉴定七个代表九个细胞土壤形成的七个小型物质，以及对ICHNOFOSES，体化石和大分子质古醇特性的详细研究。 Ichnofossils是丰富的，包括Rhizoliths，积极地填充洞穴和副群。这些IchnOfossss由各种植物，幼虫和成人节肢动物和微对宏观脊椎动物产生。古醇内的身体化石包括微型和宏观骨碎片和牙齿，压缩植物化石，痉挛和胃纤维。细胞间的垂直过渡是由于河流通道迁移和气候变化。通过该部分的300-1000毫米/毫升，沉淀地分布了一系列平均年降水量（地图）。本研究表明，通过研究古溶剂的小规模横向和垂直变化，可能是可能的。

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