... formation of quartz microcrystals from opal-A spheres at 48 weeks accompanied by small quartz peak (Q) on XRPD trace. E–F: Further development of quartz crystals at 68 weeks accompanied by quartz peak (Q) on XRPD trace. GSA Data Repository item 2006157, methods, vent conditions, XRPD results...

... Joaquin Valley, where it occurs on the sheltered under-surface of an overhanging ledge of vitric rhyolitic tuff of the Valley Springs Formation ( Marchand et al. 1981 ) that caps a low hill ( Fig. 1b ). This sveite is white and has a lumpy, tallow-flow or curd-like gross morphology and a gelatinous...

...K. A. Rodgers; K. A. Hamlin; P. R. L. Browne; K. A. Campbell; R. Martin Abstract Ruatapu cave has developed beneath a block of hydrothermally altered Quaternary vitric tuff in the active Orakei Korako geothermal field. The cave extends ~45 m, with a vertical drop of 23 m, to a shallow pool of clear...

... these beds (sandstone and dolomite) are denoted by the formational name Theresa. In Ontario and Quebec they are termed the March Formation. Lithofacies Formation Name New York State Ontario Quebec Interlayered sandstonedolomite Theresa March Sandstone-conglomerate Potsdam Potsdam...

...K. A. RODGERS; K. L. COOK; P. R. L. BROWNE; K. A. CAMPBELL Abstract Opaline silica residue accumulates on the surface and in the near surface of the Te Kopia, Tikitere and Rotokawa geothermal fields, where rhyolitic tuffs are attacked by steam condensate, made acid (pH 2–3) by sulphuric acid...

.... The most significant historic displacement was during the M W 8.2 Wairarapa Earthquake of 1855, which ruptured a 120-km length of the Wairarapa Fault and produced widespread coastal uplift and subsidence in the region ( Grapes, 1989 ; Grapes and Downes, 1997 ; Rodgers and Little, 2006 ; Little...

...., White et al. 1964 ; White et al. 1988 ; Cady and Farmer 1996 ; Jones et al. 1997a ; Renaut and Jones 2000 ; Rodgers 2001 ). The origin of these laminae has engendered considerable interest because of their relevance to the evolution of geyserite and sinter deposits and the interpretation of laminae...

... of the rupture was relatively energetic and that there was directivity consistent with a subsonic rupture velocity on the section of the fault south of Shelter Cove. Finally, we show that the intensity sites added in Santa Cruz County change the intensity distribution so that it decreases gradually along...

... , 2003 , 2008 ). The SFBR is within the boundary between the Pacific and North American plates. Plate boundary slip is accommodated by the coseismic offset, and to a lesser extent by creep, along the region’s principal faults: the San Andreas, San Gregorio, Calaveras, Hayward–Rodgers Creek, Greenville...

... reduction and recovery of the shelter-in-place housing capacity. The effect of several mitigation strategies that involve replacing portions of the existing building stock with an enhanced seismic performance system is evaluated. The impact on community resilience is assessed based on the immediate...

... a regional strain shadow. The eastern region of the Western Desert and Sinai, which were not sheltered by the stress-absorbing Cyrenaica inversion, recorded strong compressional deformation synchronous with that in Cyrenaica. As closure of the Mediterranean continues, Cyrenaica will become an indenter...

... J.D. Cole D.R. Geothermal mineralization; I, The mechanism of formation of the Beowawe, Nevada, siliceous sinter deposit American Journal of Science 1983 283 861 875 Rodgers K.A. Browne P.R.L. Silica phases in sinters and residues from geothermal fields of New Zealand...

... is at least partially attributed to soft sediment compaction due to the area being underlain by up to 40 m of postglacial marine, estuarine, and aeolian deposits of the Dillons Point Formation ( Brown, 1981 ). There are no historical observations of subsidence at our study site in the southeastern corner...

..., essentially the difference between the time since wood formation and the fire that generated the charcoal ( Gavin, 2001 ). C 14 ages from charcoal could represent wood layers at some depth within a log rather than the most recent growth years of a tree and have an inbuilt age. In the Santa Cruz...

... of efflorescences at combustion sites where gas and water vapor escape from surficial cracks and vents. Analysis of the efflorescences show that twenty different species of mineral are present, comprising various sulfates, as well as halides and native sulfur. The constituents needed for the formation...

...D. J. Cederstrom ABSTRACT Okinawa is nearly midway between Japan and Formosa. This report deals with the southern third of the island, and particularly with the structural geology and water resources. The rocks present are Paleozoic schists, the Shimajiri formation of Miocene-Pliocene age...

... ) or “ Lophohelia reefs ” after the most common coral genus. Because of the divergent use the term reef is receiving in American literature and because these coral formations in Norwegian waters exist far below effective wave base, they are here referred to as “coral banks.” Coral banks also exist along...

... of porosity and permeability in Leduc Formation carbonates with increasing burial depth and thermal maturity along the reef trend. At relatively shallow burial depths (<2000 m), limestone and dolomitized buildups have comparable porosity values and distributions. Dolomitization has resulted mainly...

... Association of Petroleum Geologists, Memoir 57 , p. 327 – 352 . Rodgers , M. 1986 . Petroleum geology of the Mississippian Mission Canyon Formation, Waskada Field, southwestern Manitoba . Manitoba Energy and Mines, Petroleum Branch, Petroleum Geology Report 1–85 , 33 p. Saller , A.H...

... to those known from Phillips or which survive in archives. Tables 2 , 3 and 4 draw heavily on Rodger’s (1960 ) The Large Scale County Maps of the British Isles, 1596–1850 , pages 1–27. Table 4: Maps of southern Scotland available to William Smith 1800–1815. County Publisher Scale...