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首页> 外文期刊>Facies >Meiofauna, trace metals, TOC, sedimentology, and oxygen availability in the Late Miocene sublittoral deposits of Lake Pannon
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Meiofauna, trace metals, TOC, sedimentology, and oxygen availability in the Late Miocene sublittoral deposits of Lake Pannon

机译：潘农湖中新世晚期滨海底沉积物的Meiofauna，痕量金属，TOC，沉积学和氧气有效性

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摘要

The Late Miocene fine-grained deposits have been investigated in the Vienna Basin to attest oxygen availability for infauna and epifauna in the sublittoral of the long-lived Lake Pannon. A clay and fine silt of the deeper lacustrine facies of a bay passed vertically into a silty clay, silt, and fine sand rhythmic deposition reflecting successive progradation of brackish prodelta to distal delta front colonized by a dense benthic population. A fully oxygenated environment is supposed in the Congeria subglobosa Beds and prodelta accentuated by ichnofauna, ostracods, and abundant in taxa and specimens, low total organic content, and trace elements concentration. A limited anoxic event caused by temporarily worsened circulation has been detected in non-calcareous greyish-blue homogenous clay with a noticeable high concentration of Ni, Co, and Pb coupled with absence of fossils, bioturbation, and low total organic carbon content.
机译：在维也纳盆地已对中新世晚期细颗粒沉积物进行了研究，以证明长寿命潘农湖沿岸的动物和表皮动物的氧气供应量。海湾较深湖相的粘土和细粉砂岩垂直进入粉质粘土，粉砂岩和细砂的有节奏沉积物中，反映出咸淡的三角洲陆续向着由密集的底栖种群定居的三角洲前缘发展。在Congeria subglobosa床和长脚刺中，应该有一个完全充氧的环境，其中鱼食类动物，成龙类动物丰富，并且分类单元和标本丰富，总有机物含量低，微量元素浓度高。已在非钙质灰蓝色均质粘土中检测到由暂时性循环恶化引起的有限缺氧事件，该粘土具有明显高的Ni，Co和Pb浓度，并且没有化石，生物扰动和总有机碳含量低。

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