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Regional Stratum system

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

1Stratum

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 织金地区地层划分简表

年代地层 岩石地层
名称 代号与接触关系
第四系 全新统 Qh
更新统 Qp
三叠系 下统 关岭组 T1g
永宁镇组T1yn 第四段 T1yn4
第三段 T1yn3
第二段 T1yn2
第一段 T1yn1
夜朗组T1y 九级滩段 T1y3
黄椿坝段 T1y2
沙堡湾段 T1y1
二叠系 上统 大隆组 P3d
长兴组 P3c
龙潭组 第二段 P3l2
峨眉山玄武岩 P3β
第一段 P3l1
中统 茅口组 P2m
栖霞组 P2q
下统 梁山组 P1l
石炭系 下统 摆佐组 C1b
大塘组 C1d
寒武系 下统 金顶山组 1j
明心寺组 1m
牛蹄塘组 1n
震旦系 上统 灯影组 Zbd
 
说明:按中国区域年代地层(地质年代)表(2001),栖霞组、茅口组分属中二叠统和上二叠统,但为了研究方便,仍沿用旧的地层代码,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.
说明: J:\2014-07绘制织金图件\2014-07-25贵州织金洞地质公园区域地层柱状图-英文版.jpg
说明: J:\贵州织金洞世界地质公园申报材料编制2013-10-26\2013-04至10月绘制的各类图件\2013-08绘制图件\2013-10-08贵州织金洞地质公园区域地层柱状图.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. 
说明: J:\2014-03贵州织金洞地质公园申报书\2014-05-05贵州织金洞地质公园区域地质简图-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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