Indoor-radon levels in the Beaver basin of southwestern Utah are the highest recorded to date in Utah. Measured indoor-radon concentrations range from 17.5 to 495pCi/L. These levels are well above those considered a health risk by the U.S. Environmental Protection Agency. Both geologic (uranium content of soil, depth to ground water, soil permeability) and non-geologic (weather, home construction, life-style) factors affect indoor-radon levels. In this study, geologic factors are quantified and used to produce a radon-hazard-potential map of the Beaver basin area. The map helps prioritize radon testing and evaluation and the need for radon-resistant construction.
Radon is a radioactive gas of geologic origin that is an environmental concern because of its link to lung cancer.
Harrison , T.M. , Ryerson , F.J. , Le Fort , P. , Yin , A. , Lovera , O.M. & Catlos , E. ) . , 1997a . A Late Miocene - Pliocene origin for central Himalayan inverted metamorphism . Earth and Planetary Science Letters , 146 , E1 - E8 .
本书责任者还有:李明、李守林、杨庚。
泰山地质综合研究
本书运用成矿系统的基本概念和分析方法,在对东秦岭地区地质、矿产、物探、化探资料进行综合分析研究的基础上,对其成矿系统与构造进行了研究。
Deszcz - Pan , M. , Rodriguez , B.D. , Doucette , J.P. , Godbout , M. , Williams , J.M. , Sawyer , D.A. , Stone , B.D. , and Grauch , V.J.S. , 2000 , Digital airborne time domain electromagnetic data ...
"Palaeogeographic reconstructions of the Australian and Antarctic margins based on matching basement structures are commonly difficult to reconcile with those derived from ocean floor magnetic anomalies and plate vectors.
Tectonic Evolution of the Sarektjåkkå Nappe, Northern Swedish Caledonides
The Early Palaeozoic orogenic belt of the Andes in southwestern South America : result of Laurentia - Gondwana collision ? ... In : WILSON , J. L. & DERBY , J. R. ( eds ) The Great American Carbonate Bank . American Association of ...
In this volume, Patrick Nunn outlines how each of the main island groups originated then gives detailed accounts - much from his own research -- - of islands in Fiji, Samoa and Tonga.