This paper reports the detailed examination of three basalt clasts from Apollo 16 breccia 60639 that represent a new variant of high-Ti basalt returned from the Moon by the Apollo 16 mission. Mineral chemistry and whole-rock analyses were conducted on aliquots from three clasts (breccia matrix, basalt, and basalt + breccia matrix). The basalt clasts, which are not overtly porphyritic, contain c...

Astronauts Cernan and Schmitt, of Apollo 17, landed in the Taurus-Littrow valley of the Moon on December 11,1972. Their major objectives were (1) to sample very ancient lunar material such as might be found in pre-Imbrian highlands as distant as possible from the Imbrium basin and (2) to sample pyroclastic materials that had been interpreted as significantly younger than the mare basalts return...

The Carboniferous volcanic reservoirs in the Shixi area of Junggar Basin are complex and diverse. Identifying characteristics main factors controlling high-quality is key to increasing oil gas reserves production this area. Through core observations, thin section identification, physical property pore structure analyses, combined with data, development modes were analysed. results show that str...

The Midcontinent Rift System of North America is a ?1.1 Ga large igneous province comprising mainly flood basalts and intrusive rocks. We present new data for the Pillar Lake Volcanics Inspiration Sill from northern edge in northwestern Nipigon Embayment. comprise ?20–40 m thick, flat-lying sequence mafic pillowed massive flows, flow breccia, hyaloclastite breccia. They are characterized by SiO...

Introduction: The 3.8 km Steinheim Basin [1] in SW Ger-many is a complex impact crater with central uplift thought to have formed simultaneously with the 24 km and 14.4 Ma Ries crater [2] by the impact of a double asteroid. The crater is hosted by a sequence of Triassic to Upper Jurassic sedimentary rocks [1]. The Steinheim Basin exhibits an almost primary crater morphology , intensely brecciat...

Misra [1] has strong reservations on our finding of Archean crustal signatures in the Lonar crater impact breccia. Our inference was based on textural, mineralogical, trace element and Nd, Sr, Pb isotopic analyses of the target basalts and the impact breccia rocks of the crater [2], whereas Misra's arguments are based on the non-in situ nature of some of the impact breccia samples of the crater...