Geochemical signatures throughout the layered Earth require significant mass transfer through the lower crust, yet geological pathways are under-recognized. Elongate bodies of basic to ultrabasic rocks are ubiquitous in exposures of the lower crust. Ultrabasic hornblendite bodies hosted within granulite facies gabbroic gneiss of the Pembroke Valley, Fiordland, New Zealand, are typical occurrenc...

It is suggested that in a localized remnant of Kalahari sand at Dufuya, central Zimbabwe, groundwater flows in an integrated pattern inherited from the paleochannel network of the underlying gneiss. Contact springs occur at discrete localities along the Kalahari sand/gneiss boundary and are associated with spring sapping and land surface subsidence. Subsidence is presumed to be due to preferent...

85 The physiography of the area is dominated by glaciated landforms carved in gneiss of the Fiordland Complex. The gneiss is generally dioritic, with gradations to quartzo-feldspathic and amphibolitic varieties, and is cut by mainly barren pegmatite veins; epidote is abundant. The rocks commonly show signs of post-consolidational shearing and crushing. There is a well defined zone of strongly c...

We present a tool called Gneiss that extends the familiar spreadsheet model to support creating data-drive web applications that use data from the Internet. Gneiss allows the user to extract data from arbitrary REST web services to a spreadsheet and send spreadsheet data to web services dynamically without writing conventional code. It provides new spreadsheet functions and interface elements t...

Abstract Bulk rock geochemistry and sensitive high-resolution ion microprobe zircon geochronology of igneous metaigneous rocks the Évora gneiss dome, located to north reworked Rheic Ocean suture zone in southwest Iberian Variscan belt, reveal a succession magmatic melting events lasting ~30 m.y. between ca. 341–314 Ma. The study detailed field relationships orthomigmatites (i.e., migmatites fro...