Kimberlites discovered so far in southern India are restricted to the Eastern Block of the Dharwar Craton and are distributed in three fields: Wajrakarur, Narayanpet, and Raipur. As summarized recently by Paul et al. (2006) and Patel et al. (2006), known kimberlite pipes in the Wajrakarur kimberlite field (WKF), which lies at the western margin of the Cuddapah Basin, occur in three clusters: Wa...

The Central Asian Orogenic Belt was characterized by a long-lived accretionary history from Neoproterozoic to Paleozoic, followed collisional phase of orogeny in the latest Paleozoic with closure Paleo-Asian Ocean. However, Ni-Cu sulfide mineralization associated mantle-derived mafic magmas relatively short-lived. Thus, coherence between protracted and transient sulfide-bearing magmatism is dif...

1-Introduction Damavand volcano was formed by explosive and non-explosive eruptions on the old eroded rock units (Mesozoic and older) of Central Alborz during the Quaternary period and formed two huge cone (Old and Young Damavand). Davidson et al. (2004) determined the time of Old-Damavand activity from 1800 to 800 thousand years ago by measuring Ar/Ar and U-Th/He methods. According to their ...

rf method is now a well-known tool for studying crustal and upper mantle structure when such a complete data set is available. we compute p receiver functions to investigate the upper mantle discontinuity beneath the northwest of iran. we selected data from teleseismic events (mb ? 5.5, 30 ?>? > 95?) recorded from 1995 to 2008 at 8 three component short period stations from tabriz telemetry sei...

The South Mountain Batholith (SMB; Nova Scotia, Canada) is the largest composite batholith exposed in Appalachians and lies entirely within most outboard Meguma terrane. In situ CA–TIMS U–Pb dating isotopes (Lu–Hf, O) geochemistry for zircon from all phases of SMB constrain its source as well evolution. CA–ID–TIMS yields emplacement (autocryst) ages, indicating a transition granodiorite (378.7 ...

The tectono-magmatic history of the Lüchun-Jinping microblock and its possible affinity with Yangtze Craton are important elements for reconstruction Cenozoic plate tectonics in southeastern Tibet. In order to constrain decipher pre-Cenozoic paleopositon microblock, we focused on petrogenesis Eocene-Oligocene lamprophyres microblock. yield zircon UPb ages 34.7–33.3 Ma exhibit potassic-ultrapota...

The Tianshui-Sunjiaxia area is located in the connection zone of West Qinling Orogen and North Qilian Orogen, which could provide great insights into amalgamation processes between northern southern blocks China. Three subduction- rift-related rocks gneissic granite from arc-interarc belt (NQAI) metabasalt back-arc basin (NQBA) are distinguished across zone. was generated by melts older crustal...

mantle cell lymphoma is an aggressive type of b-cell non-hodgkin's lymphoma that originates from small to medium sized lymphocytes located in the mantle zone of the lymph node. the gastrointestinal tract is the predominant site of extranodal involvement in the form of multiple lymphomatous polyposis. multiple lymphomatous polyposis due to mantle cell lymphoma presenting with intussusception is ...

nowadays, bivalves are used in monitoring levels of heavy metals in aquatic environments. the aim of this study was to investigate bioaccumulation of heavy metals zinc (zn) and chromium (cr) in the internal organs of anodonta cygnea. for this purpose, bivalve specimens were collected from semeskandeh region, sari, and then in laboratory, were exposed to 125 µg l-1 concentrations of each metal f...