Pelitic schists from Qingshuigou in the Northern Qilian Mountains of China contain mainly glaucophane, garnet, white mica, clinozoisite, chlorite and piemontite. Isotopic age dating of these schists provides new constraints on the formation of the high‐grade blueschists at Qingshuigou. White mica 40 Ar/ 39 Ar ages range from 442.1 to 447.5 Ma (total fusion age of single grain) and from 445.7 to 453.9 Ma (integrated age of whit...

Prograde eclogites occur in the Tonaru epidote amphibolite mass in the Sambagawa Metamorphic Belt of central Shikoku. The Tonaru mass is considered to be a metamorphosed layered gabbro, and occurs as a large tectonic block (approximately 6.5 km × 1 km) in a high‐grade portion of the Sambagawa schists. The Tonaru mass experienced high‐ P /low‐ T prograde metamorphism from the epidote‐blueschist facies to the eclogite facies pri...

The Himalaya is a fold‐and‐thrust wedge formed along the northern margin of the Indian continent, and consists of three thrust‐bounded lithotectonic units; the Sub‐Himalaya, the Lesser Himalaya, and the Higher Himalaya with the overlying Tethys Himalaya from south to north, respectively. The orogen‐scale, intracrustal thrusts which bound the above lithotectonic units are splays off an underlying subhorizontal dkcollement, and...