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GEOLOGY OF THE CHIANG MAI BASIN A Review
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GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

Nov 11, 2018

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Page 1: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

GEOLOGY OF THE CHIANG MAI BASIN

A Review

Page 2: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

CENOZOIC BASINS IN THAILAND

Morley et al. (in press)

Page 3: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

CENOZOIC BASINS IN NORTHERN THAILAND

Morley et al. (in press)

Page 4: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

GEOLOGIC MAP

DMR (2007)

1-2

3

Page 5: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

DEPOCENTRES - INTERPRETED FROM GRAVITY

Morley et al. (in press)

Page 6: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

METAMORPHIC COMPLEX

Morley et al. (in press)

Page 7: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

METAMORPHIC COMPLEX

MacDonald et al. (2010)

Page 8: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

ROCK TYPES & MINERAL COMPOSITIONS

Orthogneiss

Paragneiss

MacDonald et al. (2010)

Page 9: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

ROCK TYPES & MINERAL COMPOSITIONS

Calc-slilicate gneiss

Granitic Mylonite

MacDonald et al. (2010)

Page 10: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

GEOLOGIC MAP

DMR (2007)

Page 11: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

Tertiary Outcrop - MAE TAENG

Page 12: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

Tertiary Outcrop - MAE MALAI BYPASS

Page 13: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

GEOLOGIC MAP

DMR (2007)

Page 14: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

SEISMIC INTERPRETATION

Morley C.K. (pers. comm.)

Page 15: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

GEOLOGIC MAP

DMR (2007)

Page 16: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

SEISMIC INTERPRETATION

Page 17: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

GEOLOGIC MAP

Page 18: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

Top-Tertiary unconformity

Detachment at Top Pre-Tertiary

Potential active fault

All of the faults appear to be normal and some (blue lines)

coincide with offset reflections at Quaternary level.

under-migrated

basement signals?

Seismic results from SEG sponsored ‘Geoscientist Without Borders’ field camp 2010

Page 19: GEOLOGY OF THE CHIANG MAI BASIN - Coordinating … ChiangMai_Basin_FW.pdf · CHIANG MAI BASIN - SCHEMATIC PROFILE. Myanmar Mae Ping Fault Zone Mae Ch an Fault NCB = North Regøn KP

CHIANG MAI BASIN - SCHEMATIC PROFILE