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正确判断富钴结壳生长年代及过程有助于研究结壳形成地质历史和重建古海洋环境.利用生物地层学方法(生物遗留印痕)对太平洋不同海山结壳样品进行生长时代和阶段研究,发现麦哲伦海山CM3D06结壳和中太平洋海山CB14结壳最初形成年代和富集特征差异显著:前者为白垩纪(或更古老)、晚古新世-早始新世、中-晚始新世、中-晚中新世、上新世-更新世等5个阶段;后者为晚古新世-早始新世、中-晚始新世、中中新世、上新世-更新世等4个阶段.两座海山结壳层内部超微化石组合具有极强的区域性特征,反映了大洋环境对生物的影响以及生物对环境的适应.结壳层间的不整合和结构构造的变化指示在渐新世其生长存在间断期,与成矿作用的间断有关.
Correctly judging the age and process of the growth of cobalt-rich crusts is helpful for the study of the formation of geological history of crusts and the reconstruction of the ancient marine environment.Studies on the age and stage of growth of samples from different seamounts in the Pacific Ocean using biostratigraphy The Magellan seamount CM3D06 crust and the Central Pacific seamounts CB14 crust initially formed and enrichment characteristics significantly different: the former is the Cretaceous (or more ancient), Late Paleocene - Early Eocene, Mid-Late Eocene, medium - Late Miocene, Pliocene - Pleistocene and other five stages; the latter is Late Paleocene - Early Eocene, Mid - Late Eocene, Miocene, Pliocene - Pleistocene et al 4 The two ultra-fine fossil assemblages in seamount crust are characterized by strong regional characteristics, which reflect the impact of the ocean environment on the living organisms and the adaptation of the environment to the environment. The unconformity and structural changes of the crust indicate In the Oligocene, its growth has a discontinuous period, which is related to the discontinuity of mineralization.