The study area is located about 110 kilometers southeast of Mashhad and approximately 40 kilometers southeast of Fariman. The area is considered to be a part of the central Iran zone. It includes metamorphic rocks with different protoliths consisting of pelitic, carbonate and quartz - feldspathic rocks. The metamorphism in the study area is considered to be a contact regional metamorphism with ...

Introduction The lowest known portion of the Poorman Formation as determined from diamond drilling and mapping is the Yates Unit. It largely comprises amphibolite, but also contains interbedded volcaniclastics, calc-silicate beds, metachert, and carbonate-rich semipelitic rocks. This unit is exposed at the surface in the Blacktail Gulch area north of Lead and continues down-plunge to the southe...

Abstract Eclogite-facies mineral assemblages are commonly preserved in mafic protoliths within continental terranes. It is widely accepted that the entirety of these terrains must also have been subducted to eclogite-facies conditions. However, evidence felsic material transformed at conditions lacking. Low-strain metagranites ultrahigh-pressure metamorphic Tso Morari Complex Ladakh, Himalaya, ...

INTRODUCTION The field trip today will concentrate mostly on the metamorphic effects on the Biwabik Iron Formation, at the Peter Mitchell mine of eastern Mesabi Iron Range, caused by intrusion of the nearby Mesoproterozoic Duluth Complex (1.1 Ga). The stratigraphy of the iron-formation that is used at this mine, and nearby mines, was mainly developed by Gundersen and Schwartz (1962) and is depi...

The north-dipping Hout River Shear Zone (HRSZ), which marks the boundary between high-grade Limpopo Complex in its hanging wall and low-grade granite-greenstone terrane of Kaapvaal Craton South Africa footwall, is a deep-crustal shear zone that controlled emplacement hot granulites over against granite-greenstones during exhumation at ~2.72–2.62 Ga. This major migration large volumes hydrous fl...

Ultrasonic laboratory measurements of seismic compressional velocities (Vp) carried out on rock samples encompasing a wide range of metamorphic grades and lithologies from the Betic chain are presented. Measurements were performed at a high confining pressure on a total of 12 representative samples of the Alboran Domain (Internal Betics). P-wave mean velocities, referred to pressure conditions ...