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Regional Stratum system

2015-03-23 11:45 | Author:gzzjd | Reading:amount |

1、Stratum

The geopark area is basically covered by sedimentary rocks with the sedimentary thickness of 2250-2550m, which is divided into 16 official stratum units (Table1-1).
 
表1-1 織金地區地層劃分簡表

年代地層 巖石地層
名稱 代號與接觸關系
第四系 全新統 Qh
更新統 Qp
三疊系 下統 關嶺組 T1g
永寧鎮組T1yn 第四段 T1yn4
第三段 T1yn3
第二段 T1yn2
第一段 T1yn1
夜朗組T1y 九級灘段 T1y3
黃椿壩段 T1y2
沙堡灣段 T1y1
二疊系 上統 大隆組 P3d
長興組 P3c
龍潭組 第二段 P3l2
峨眉山玄武巖 P3β
第一段 P3l1
中統 茅口組 P2m
棲霞組 P2q
下統 梁山組 P1l
石炭系 下統 擺佐組 C1b
大塘組 C1d
寒武系 下統 金頂山組 1j
明心寺組 1m
牛蹄塘組 1n
震旦系 上統 燈影組 Zbd
 
說明:按中國區域年代地層(地質年代)表(2001),棲霞組、茅口組分屬中二疊統和上二疊統,但為了研究方便,仍沿用舊的地層代碼,以下相同。
Table 1-1 List of Stratigraphic Division in Zhijin Area

Geochronologic unit Lithostratigraphic unit
System Series Name Code and Contact Relation
Quaternary system Holocene series Qh
Pleistocene series Qp
Triassic system Lower Guanling Formation T1g
Yongningzhen Formation (T1yn) Fourth member T1yn4
Third member T1yn3
Second member T1yn2
First member T1yn1
Yelang Formation (T1y) Jiujitan member T1y3
Huangchunba member T1y2
Shabaowan  member T1y1
Permian System Upper Dalong Formation P3d
Changxing Formation P3c
Longtan Formation Second member P3l2
Emeishan Basalt P3β
First member P3l1
Middle Maokou Formation P2m
Qixia Formation P2q
Lower Lianshan Formation P1l
Carboniferous system Lower Baizuo Formation C1b
Datang Formation C1d
Cambrian system Lower Jindingshan Formation 1j
Mingxinsi Formation 1m
Niutitang Formation 1n
Sinian system Upper Dengying Formation Zbd
 
Note: according to the geochronologic unit (geologic age) table (2001) of China, Qixia Formation and Maokou Formation belong to Middle Permian series and upper Permian series respectively; however, for the convenience of research, the old stratum code is to be used, and the following are the same.
說明: J:\2014-07繪制織金圖件\2014-07-25貴州織金洞地質公園區域地層柱狀圖-英文版.jpg
說明: J:\貴州織金洞世界地質公園申報材料編制2013-10-26\2013-04至10月繪制的各類圖件\2013-08繪制圖件\2013-10-08貴州織金洞地質公園區域地層柱狀圖.jpg
In the exposed stratum of geopark, Yelang Formation and Yongningzhen Formation of Lower Triassic series dominate, with the total thickness of greater than 300m, and they distribute in the shape of strip piece. They are horizontally separated by coal measure strata of upper Permian series and shale stratum of Triassic System,and are vertically separated by soluble stratum (Huangchunba Member) and unsoluble stratum (Shabaowan Member and Jiujitan Member) of Lower Triassic series, to form distinctive aquiclude structure with coexistence of  both horizontal
and vertical aquiclude. 
說明: J:\2014-03貴州織金洞地質公園申報書\2014-05-05貴州織金洞地質公園區域地質簡圖-中英文.jpg
Figure 2-1 Areal Geology Diagram of Guizhou Zhijindong Cave Geopark (according to Fu Zichong, et al. 1989)
 

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