Khlong Wang Chao Gr
Period:
Cambrian, Ordovician
Age Interval:
Late Cambrian and entire Ordovician (8)
Province:
NW Thailand – Inthanon Zone
Type Locality and Naming
Khlong Suan Mark, 4 km west of Pong Nam Ron village and Huai Khrai, a western tributary of Mae Ping between Tak and Wang Chao, Tak province. Named by Bunopas (1981). Two informal formations: Suan Mark Limestone Fm and Pong Nam Ron Quartzite Fm.
Synonym: กลุ่มหินคลองวังเจา้
Lithology and Thickness
Quartzite, quartz-schist and argillaceous limestone. Over 1327 m.
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
Not given
Upper contact
Regionally, the next younger unit is the Mae Ping Fm.
Regional extent
Northern and Western Regions: Lamphun, Lampang, and Tak provinces
Seems correlative with limestone-dominated units P-S of Baum et al. (1970):
GeoJSON
null
Fossils
Age
Age Span:
Beginning stage:
Paibian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
497.00
Ending stage:
Rhuddanian
Fraction up in the ending stage:
0.0
Ending date (Ma):
443.83
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Wen Du - modified from Ridd. M. F., 2011, Chapter 3 Lower Palaeozoic in: Ridd, M.F., Barber, A.J., and Grow, M.J., editors, The Geology of Thailand, Geol. Soc. of London. And from Lexicon of Stratigraphic Names of Thailand of 2013.