Qiao Xiufu Song Tianrui Li Haibing
The original text was published in Science Bulletin on April 7, 2002 (14). Now, color photos are added in this paper, which is more convenient for readers to understand that the dolomite vein of Dalinzi Formation is liquefied in the layer instead of infiltrating downward from the surface. This chapter can be used as a supplement to 14. In order to maintain the original system, duplicate drawings with chapter 14 were not deleted.
In this paper, the author puts forward for the first time that Dalinzi Formation is a saline deposit in Sabha environment, and now focuses on several issues for supplementary discussion:
Evidence of flow structure. Liquefaction drainage veins of carbonate rocks in dolomite of Ordovician Shalinhudong Group in Bayan Obo area, Inner Mongolia, are composed of bright calcite (consistent with Proterozoic molar structure). It can be clearly seen that some horizontal stripes are connected with curved veins (stripes meeting liquefaction conditions), and the veins penetrate into the rock in two directions. A large number of thin slices show that the structure of grain liquefaction flow in striation direction and up and down direction is very clear, which is consistent with the origin of liquefied argillaceous dolomite described in this paper.
(2) Symbiosis with intra-layer synsedimentary deformation structure caused by earthquake. Carbonate mud (bright) crystal veins (molar structure) coexist with intra-layer faults-gradation, and intra-layer faults are interpreted as detailed explanations of earthquake causes, and different opinions are put forward to publish their own research results instead of abstractly denying the causes of earthquake liquefaction.
refer to
[1] Qiao Xiufu, Gao Linzhi. A striking salt layer on the North China platform. Journal of Institute of Geology, Chinese Academy of Geological Sciences, 1986, (15): 66 ~ 69.
Qiao Xiufu, Song,, et al. Sinian-Lower Cambrian genetic strata in southern Liaodong Peninsula. Attached is a travel guide to Dalian Jinshitan Binhai National Scenic Area. Beijing: Science Press,1996.1~174 (with 24 plates attached).
Liu Ying, Xie Junfei. Vibration liquefaction of sand. Beijing: seismological press, 148+0 ~ 327.
Qiao Xiufu, Gao Linzhi, Peng Yang, et al. Canglang Puji earthquake event, sequence and its tectonic significance in the ancient Tanlu belt. China Science, Series D, 200 1, 31(11): 916558.
Qiao Xiufu, Gao Linzhi. Earthquake disasters in Mesoproterozoic and Early Paleozoic in North China and their relationship with earthquakes. Science bulletin,1999,44 (16):1753 ~1757.
Qiao Xiufu, Song, Gao Linzhi, et al. Earthquake sequence of vibration liquefaction of carbonate rocks. Journal of Geology,1994,68 (1):16 ~ 34.
[7] Fail Qi, Ainse Luck, Song. Possible earthquake origin of molar structure in Neoproterozoic carbonate slope deposits in North China. Sedimentology, 1997, 44:6 1 1~636
Qiao Xiufu, Gao Linzhi, Peng Yang. Neoproterozoic in the tan-lu belt-catastrophe, sequence and biology. Beijing: Geological Publishing House, 2001.1~128 (attached 10 plate)
[9] Seilacher A. is interpreted as fault classification layer of seismite. Se dimentology， 1969， 13( 1-2): 155 ~ 159
Song Tianrui. For paleoseismic data in sedimentary rocks, see:, Xu,, editor-in-chief Progress in astronomical geology, Beijing: Ocean Press, 1986.95 ~ 104.
[1 1]Plaziat J C, Purser B H, Philobbos E. Seismic deformation structures (seismites) in the sediments of the same rift valley in the Northwest Red Sea (Egypt). French Bull Football Team,1990,8 (3): 419 ~ 439
[12]Guiraud M, plzaiat j.c. seismite in river Bima sandstone: paleoearthquake identification and magnitude discussion in Cretaceous synsedimentary strike-slip basin (Upper Benue, Nigeria). Tectonic physics,1993,225 (4): 493 ~ 522
[13]Puser B H, Plaziat J C, Philobbos E. Layered breccia and related deformation structures of Neogene earthquakes recorded in sediments of the same rift valley along the coast of the Red Sea in Egypt. Egypt eol Soc, Spec Publ, 1993, (1): 189~204.
[14]Rossetti D F, Goés A.De encrypted sedimentological imprint of paleoseismic events: an example of Aptian Cod6 formation in northern Brazil. Sedimentary geology, 2000,135:137 ~156.
[15] moretti m. is interpreted as the soft sediment deformation structure of seismite in ae-olian sediments in the middle and late Pleistocene (Aplian foreland in southern Italy). Sedimentary geology, 2000,135:167 ~179.
Pan Guoqiang, Liu Jiarun, Kong Qingyou, et al. Sinian geological events in Xu Su and their causes. geological journal of china universities, China, 2000,6 (4): 566 ~ 575.
[17] Qiao Xiufu, Gao Linzhi, Peng Yang, et al. Comprehensive Strata of Xilin Hudong Group in Inner Mongolia and Ore-bearing Microchillock of Bayan Obo Deposit. Journal of Geology,1997,71(3): 202 ~ 21/kloc-.
Zhou Xiaodong, Chen Yuejun. Characteristics of late sinian seismites in jinan area. Geology of Jilin, 1998, 17 (4): 24 ~ 29.
Shan, Pan, et al. Discovery of seismite in Wumishan Formation in western Liaoning and its tectonic significance. Geology of Liaoning, 2000, 17 (4): 267 ~ 270.
He, Song, Ding, et al. Synsedimentary faults in the early Yanshanian Mesoproterozoic rift and their influence on event deposition. Journal of palaeogeography, 2000,2 (3): 83 ~ 91.
Du, Zhang Chuanheng, Han Xin, et al. Earthquake events of Mesoproterozoic Kunyang Group in central Yunnan and their geological significance. China science, series d, 200 1, 3 1 (4): 283 ~ 289.
Peng Yang, Yang Tiannan, Qiao Xiufu, et al. Study on catastrophic events of the Upper Sinian earthquake in Dalian. Journal of Geology, 200 1, 75 (2): 22 1 ~ 227.
[23] Pratt B.R.O. Oceanography, bathymetry and synsedimentary structures in the Precambrian intra-craton basin: integrated sediments, storms, earthquakes and tsunamis in the Belt Super Group(Helene stratum, Ca. 1.45 Ga) in western North America. Sedimentary geology, 200 1,141~142: 371~ 394.
[24] Frank T.D., Lyons T.W. "Molar" structure: a geochemical perspective on the mystery of Proterozoic. Geology,1988,26 (8): 683 ~ 686