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A Comprehensive Evaluation on the Devonian‐Carboniferous Boundary Stratotype Candidate Section in Nanbiancun, Guilin, Guangxi 1
Author(s) -
Changmin Yu
Publication year - 1990
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.1990.mp3001007.x
Subject(s) - stratotype , global boundary stratotype section and point , geology , carboniferous , devonian , paleontology , facies , section (typography) , biostratigraphy , boundary (topology) , ecological succession , sedimentary rock , structural basin , stage (stratigraphy) , mathematical analysis , ecology , mathematics , advertising , business , biology
This paper presents a comprehensive evaluation on the Devonian‐Carboniferous Boundary (DCB) section in Nanbiancun, Guilin, Guangxi on the basis of Palaeontological, biostratigraphical and sedimentary petrological studies as well as microfacies analysis, REE and trace element analysis and isotopic dating. The DCB at this section conforms to the definition of this boundary and essentially measure up the criteria and conditions for selection of the boundary stratotype. Up to 14 fossil groups are contained in the section. The section presents a general biostratigraphical framework with multispecies fossils zones, assemblage zones and multiple groups of fossils and has latent preponderant conditions for magnetostratigraphic and chronostratigraphic studies. The boundary and point occur in a persistent and continuous monofacial carbonate succession, and the section is located in a tourist city with convenient communication, where various facies of DCB sections are developed, allowing the correlation within a small area. So it is an ideal candidate boundary stratotype.