Nanmel Fm
Period:
Cretaceous
Age Interval:
Early Cretaceous, (43a)
Province:
Guangdong, Hainan
Lithology and Thickness
Succession of sandstone and mudstone intervals. Basal conglomerate onto disconformity. About 100 m thick in Baisha Basin
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Its base marked by conglomerate shows an angular discordance with the underlying strata. In the Sanya area (southern Hainan island), it lies unconformably on the Upper Ordovician Gangoucun Fm. In Baisha Basin, it is a disconformity onto the Nanbigan Gr (metamorphosed silty slate).
Upper contact
Conformable below Hongmao Fm (upper Lumuwan Gr).
Regional extent
Mainly occurs in the Baisha-Ledong, Yangjiang-Qionghai, Changpo-Dongjiang, Leiming and Sanya basins of the Hainan Island
GeoJSON
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Fossils
Age
Aptian to early Albian
Age Span:
Beginning stage:
Barremian
Fraction up in beginning stage:
0.5
Beginning date (Ma):
123.95
Ending stage:
Albian
Fraction up in the ending stage:
0.2
Ending date (Ma):
110.66
Depositional setting
Depositional pattern:
Additional Information
Compiler: