TAILIEUCHUNG - Báo cáo " On some significant unconformities in the Paleozoic and Mesozoic stratigraphy of North Viet Nam "

A lot of unconformities and stratigraphic gaps have been discovered in the Paleozoic and Mesozoic stratigraphy of Bac Bo region (North Viet Nam), but their role in the regional geology was not accessed yet in detail. This paper is the first attempt to describe the most significant unconformities and stratigraphic gaps and discussing their role in regional geology. The most important is the angular unconformity of Norian‐Rhaetian formations upon various formations of different formations; it marked the change tectonic regime of the region resulting from the indosian orogeny in . | VNU Journal of Science Earth Sciences 23 2007 137-146 On some significant unconformities in the Paleozoic and Mesozoic stratigraphy of North Viet Nam Tong Dzuy Thanh College of Science VNU Received 10 July 2007 Abstract. A lot of unconformities and stratigraphic gaps have been discovered in the Paleozoic and Mesozoic stratigraphy of Bac Bo region North Viet Nam but their role in the regional geology was not accessed yet in detail. This paper is the first attempt to describe the most significant unconformities and stratigraphic gaps and discussing their role in regional geology. The most important is the angular unconformity of Norian-Rhaetian formations upon various formations of different formations it marked the change tectonic regime of the region resulting from the indosian orogeny in Viet Nam and in Southeast Asia in common. The gap of Lower Devonian red beds formations Si Ka Formation Song Cau Group upon Lower Paleozoic formations Upper Cambrian -Than Sa Formation Lower Ordovician - Lutxia and Na Mo formations is a regional unconformity which had been taken place in the epicaledonian terranne of South China and North East of Viet Nam. The gap between the Da Mai Formation and the Dong Dang Formation was a result of a crust rising but was not through the orogeny activity although after this gap the structural plan was more differentiated. Other unconformities and stratigraphic gaps seems to be local unconformities for instance the one of the Tan Lap Formation D2g-D3 fr tl upon the Ban Pap Formation D1p-D3 fr bp and the unconformity between the Sinh Vinh O3-S sv and the Ben Khe -O1 bk formations. Keywords Unconformity Stratigraphy Paleozoic Mesozoic. 1. Introduction A lot of unconformities and gaps have been described in Paleozoic and Mesozoic stratigraphy of North Viet Nam. From the unconformities and gaps in combination with the facies of underlying and overlying formations geologists can draw the first step for interpretation of their role in the geological .

• Báo cáo khoa học
• significant unconformities
• Paleozoic
• earth sciences
• Research
• scientific research
• scientific reports
• collection of scientific reports
• industry reports philosophy of history reports
• reports in literature
• a scientific b shirt
• presentation of scientific reports
• reports on literature
• philosophy statement
• documents
• studies English language and English language communication and English language commercial
• progress reports at scientific collections
• agronomic reports
• reports in physics
• biology reports
• thematic biological
• induced geometry
• mathematical topics
• quantum mechanics
• physics
• reporting mathematics
• physics reports
• livestock reports
• physical reports
• research physicist
• specializing in physics
• mathematical statements
• mathematical equations
• English pronunciation
• presentation report
• agricultural reports
• technical crops
• bio technology
• English reports
• presentation reports
• mathematical knowledge
• reports of mathematics
• represented
• Wilf on packing distinct
• Tur´n density
• mathematical works
• patterns in a permutation
• statements and documents scientific reports
• reports agronomy
• biotechnology
• plants Vietnam
• specialized biological
• microbiological methods
• presenting the report
• anti bacterial properties of shrimp
• energy exchange
• engineering chicken
• Path counting
• random matrix theory
• Even circuits
• prescribed clockwise parity
• Correspondence between
• algorithmic characterizations
• Finding Induced Acyclic
• Random Digraphs
• Nonexistence results
• Hadamard like matrices
• Voltage Graphs
• Group Presentations
• Cages mathematical knowledge
• Dominance Order
• Graphical Partitions
• On the functions
• values in [α(G
• Box With Translates
• Two Given Rectangular Brick
• On the q analogue
• the sum of cubes