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1、第 12卷null 第1期2010年null 2月古 地 理 学 报JOURNALOF PALAEOGEOGRAPHYVolnull12null Nonull1Feb. 2010null null c I | : 1671- 1505 (2010 ) 01- 0017- 14s v 8 # Z 牛新生1, 2 null 王成善1, 21中国地质大学 (北京) 地球科学与资源学院, 北京 1000832中国地质大学 (北京) 青藏高原地质研究中心, 北京 100083K null 1 null 异地碳酸盐岩块体是指已固结或半固结的a经过一定距离搬运再沉积而产于正常沉积地层中规模较大的碳酸盐岩块,
2、 它和碳酸盐岩重力流沉积均属于再沉积碳酸盐岩b文章分析了岩崩a岩屑崩坍a海底滑坡a滑塌和碎屑流沉积的过程, 讨论了异地碳酸盐岩块体的沉积机制; 归纳了异地碳酸盐岩块体形成的主要地质背景, 认为异地碳酸盐岩块体可见于活动大陆边缘a被动大陆边缘a海山和前陆盆地等地质环境中; 着重介绍了异地碳酸盐岩块体和碳酸盐岩重力流沉积的研究进展, 即线源式的碳酸盐岩裙沉积和点源式的碳酸盐岩海底扇沉积; 最后, 阐释了滑来岩块a滑塌堆积和碎屑流沉积的区别与联系, 总结了孤立碳酸盐岩块体的搬运沉积机制, 对比区分了碳酸盐岩裙沉积和碳酸盐岩海底扇的沉积特征, 认为它们在斜坡环境a沉积物类型和沉积特征等方面存在诸多不同
3、b1 o M null 碳酸盐岩块体null 碳酸盐岩重力流null 海底滑坡null 滑塌null 碳酸盐岩裙null 碳酸盐岩海底扇null 滑来岩块null滑塌堆积 B T e null 牛新生, 男, 1981年生, 现为中国地质大学 (北京 ) 在读博士研究生, 研究方向为沉积学bEnullmail: xs_niu 126nullcomb m s | : P588null24+ 5null null D S M : Al : 2009- 05- 13null null : 2009- 09- 11Problems and prospect in studies of allochth
4、onous carbonate blocksand carbonate gravity flow depositsNiuXinsheng1, 2null WangChengshan1, 21School of Earth Sciencesand M ineralResources, China Unviersity of Geosciences (Beijing), Beijingnull 1000832Research Center forTibetanPlateau Geology, China University of Geosciences (Beijing), Beijingnul
5、l 100083Abstractnull Allochthonouscarbonateblocks areexoticbiggish carbonateblocksthathaveaconsolidatnulled or semiconsolidated state appearing in thenormalsedimentary stratum by a long distance transportationand redeposition. Both allochthonous carbonate blocks and carbonate gravity flow belong to
6、renulldepositedcarbonates. Theprocessofrock fal,l debris fal,l slide, slump and debris flow havebeen analyzed and thesedimentarymechanism ofallochthonouscarbonateblockshasbeen discussed. Thispaperdocumented theprimary geologicalbackground fortheformation ofallochthonous carbonateblocksandproposed th
7、atallochnullthonous carbonateblocksmainly appear in the active continentalmargins, passive continentalmargins,古null 地null 理null 学null 报null null null 2010年 2月seamounts, foreland basins and othergeologicalenvironments. Thispaper introduced theresearch progressof the allochthonous carbonateblocks and
8、carbonategravity flow for the line sourced carbonateaprons andthepointsourced carbonate submarine fans. Finally, the differences and relations about olistolith, olisnulltostrome and debritehavebeen explained. The transported and sedimentarymechanism ofthe isolated carnullbonateblock havebeen summari
9、zed. Also, carbonate apronsand carbonate submarine fanscan bediffernullentiated according to slopeenvironments, sediment types, sedimentary characteristics and other factors.Key wordsnull carbonate block, carbonate gravity flow, submarine slide, clump, carbonate apron,carbonatesubmarine fan, olistol
10、ith, olistostromeAbout the first authornull NiuXinsheng, born in1981, is acandidate forhisPhnullDnulldegree inChinaUniversityofGeosciences (Beijing) and ismainly engaged in sedimentology. Enullmai:l xs_niu126nullcom.1null - s v 8 X % % aV B 7 a? v v , V $ , v H B H H v M , H , ( (Resedimented carnul
11、lbonates)bs v 8 & H , t v a + # v M + , ? Z L Z f # V v H a , V 7 V / u ; v H B H , s v 8 V 3 g (f W ! ,2000); s v 8 o z : c (Cieszkowskiand Colonka, 2006), / O / bM s v 8 , 4 6 i l , Z , + Y , V 4 z H q(Enos, 1983, 1985; Wright and W ilson, 1984;Cook, 1987; Saller et al. , 1989)b S 2 Z 1 ( o ,1982; i , 1982; , 1985,1990; B , 1986; , 1989, 1991; 珺等, 1990; 陈志明, 1991; 郭建华等, 1997), t , S 2 Z | l 1 b M , S = s v 8 | B , 1 20W 70M 90M , Y L , s v 8 v / S 7 v s 1 , y N , V , s v 8 $ T
