This paper presents a discussion of the basic constraints controlling the formation of pseudotachylites in the rapidly sheared rocks in the vicinity of a large meteorite impact. The prevailing opinion among many geologists is that pseudotachylites are formed by friction melting of rock. The principal mystery of pseudotachylite formation is not that friction can cause melting, but that it seems ...

Magmatic stoping is discussed to be a main mechanism of magma emplacement. As a consequence of stoping, abundant country-rock fragments should occur within, and at the bottom of, magma reservoirs as "xenolith graveyards", or become assimilated. However, the common absence of sufficient amounts of both xenoliths and crustal contamination have led to intense controversy about the efficiency of st...

Finance Minister of India, in 2007 Government of India launched the Dug Well Recharge Scheme as a national program with an outlay of Rs. 1800 crore. Its aim was to educate and incentivize farmers in 100 hard rock districts of the country to modify their open dug wells for groundwater recharge. However, after around 3 years of operation of the scheme, our review found that it failed to achieve m...

“The goal for both [physicians] and musicians is the satisfaction of bringing order out chaos.”1Paraphrased from Kennedy, R. Medical Musicians. Interlude.https://interlude.hk/medical-musicians/Date accessed: May 23, 2023Google Scholar With professional as a daughter son-in-law, I am privileged to benefit greatly ad hoc performances that cover many musical genres. This got me thinking about how ...

Morokweng is a large, 145 Ma impact structure in the Northwest Province of South Africa. The impact origin of this structure and its melt rock has been confirmed by ample evidence of shock metamorphism in clasts within the melt rock and samples from granitoid basement below the melt body. The age of this structure is indistinguishable from the biostratigraphic age of the Jurassic-Cretaceous (J-...

a r t i c l e i n f o The purpose of this study is to analytically predict and to experimentally investigate the seismic response of adjacent filled parallel rock fractures with dissimilar properties (e.g., fracture thickness and stiffness). The time-domain recursive method is extended to predict that a P-wave propagates normally across the filled parallel fractures using the specific stiffness...

OBJECTIVE The main objectives of the present study were to investigate the rock pigeon parasitic communities from Iraq as well as reporting on the prevalence and intensity of various infections from both sexes. METHODS An examination of 128 specimens of the live rock pigeon Columba livia from Iraq was undertaken. The samples were obtained from several localities of Iraq. Blood samples were ex...