Pha Kan Fm
Period:
Triassic
Age Interval:
Lower to Middle Triassic (Uppermost Dienerian – Anisian) (11)
Province:
Sukhothai Fold Belt
Type Locality and Naming
Type section: Doi Pha Kan, Tha Si village, Lampang province; reference sections at Phra That Muang Kham temple of Mueang Lampang district and at Doi Chang of Mae Moh district, Lampang province, west part of the Northern Region of Sukhothai Fold Belt. Parent unit: lower-middle formation in Lampang Gr.
Synonym: หมวดหินผาก้าน
Lithology and Thickness
Limestone. Thin- to thick-bedded, massive, grey to dark grey limestones with minor grey to green shale and sandstone. Subdivisions: Chaodumrong and Burrett (1997) subdivided into 4 members: Wiang Sawan, Chang Garb, Cave Temple, and Muang Kham Members. Thickness: 80-550 m
Lithology Pattern:
Limestone
Relationships and Distribution
Lower contact
Phra That Fm (conformable)
Upper contact
Hong Hoi Fm (conformable)
Regional extent
Lampang-Phrae basin, west part of the Northern Region of Sukhothai Fold Belt..
[Figure 2 : Generalized distribution of marine Triassic sedimentary rocks in Thailand (in purple) (modified after Mantajit 1999). (The geology of Thailand, 2011) page 138]
GeoJSON
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Fossils
Age
Anisian in Fig. 6.2 of Chonglakmani, C.P., 2011.
Age Span:
Beginning stage:
Anisian
Fraction up in beginning stage:
0
Beginning date (Ma):
246.80
Ending stage:
Ladinian
Fraction up in the ending stage:
0
Ending date (Ma):
241.50
Depositional setting
Shallow marine, ramp carbonate platform
Depositional pattern:
Additional Information
Compiler:
Wen Du - modified from- Chonglakmani, C.P., 2011, Chapter 6 Triassic in Ridd, M.F., Barber, A.J., and Grow, M.J., editors, The Geology of Thailand, Geol. Soc. of London.；Lexicon of Stratigraphic Names of Thailand of 2013.