Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Peter L. McSwiggen"'
Autor:
Peter L. McSwiggen, G.B. Morey
Publikováno v:
Regulatory Toxicology and Pharmacology. 52:S11-S25
The mineralogy of the Biwabik Iron Formation changes dramatically from west to east as the formation nears the basal contact of the Duluth Complex. This reflects a contact metamorphism that took place with the emplacement of the igneous Duluth Comple
Publikováno v:
European Journal of Oral Sciences. 106:971-976
Six extracted human teeth with naturally-formed neglected stain were analyzed for chemical constituents using wavelength dispersive spectrometry (WDS), an electron microprobe technique. Spatial distribution, within a few microm resolution, of the com
Publikováno v:
Economic Geology. 91:1282-1291
Concentrations of tourmaline in Early Proterozoic metasedimentary rocks of the Cuyuna iron range, east-central Minnesota, provide a basis for redefinition of the evolutionary history of the area. Manganiferous iron ore forms beds within the Early Pro
Publikováno v:
Mineralogical Magazine. 58:387-399
The recent discovery of hyalophane [(K,Ba)Al1−2Si3−2O8] on the North range segment of the Early Proterozoic Cuyuna Iron Range of east-central Minnesota has shed new light on the depositional environment of these rocks. This Ba-feldspar occurs in
Autor:
Peter L. McSwiggen
Publikováno v:
Physics and Chemistry of Minerals. 20:33-41
The minerals of the ternary carbonate system CaCO3 - MgCO3 - FeCO3 represent a complex series of solid solutions and ordering states. An understanding of those complexities requires a solution model that can both duplicate the subsolidus phase relati
Publikováno v:
Tectonics. 6:677-685
The Midcontinent rift contains a central zone of mostly volcanic and associated intrusive rocks. Flanking, and in places overlying, these mafic igneous rocks are clastic sedimentary basins which range in thickness from less than 1.5 km southwest of t
Publikováno v:
Economic Geology. 81:173-183
Exploration for unconformity-type uranium deposits in the late 1970s in east-central Minnesota led to the discovery of several uranium-bearing phosphorite occurrences in rocks of early Proterozoic age. In this report the authors use the term phosphor
Publikováno v:
AAPG Bulletin. 73
Seismic reflection, gravity, and magnetic data were used along four profiles to study the Mid-Continent rift system between northwestern Wisconsin and central Iowa. Mafic lavas in medial horsts are characterized by strong laterally continuous reflect
Publikováno v:
Electrophoresis; Nov2013, Vol. 34 Issue 20/21, p2945-2955, 11p
Autor:
McSwiggen, Peter
Publikováno v:
Physics & Chemistry of Minerals; May1993, Vol. 20 Issue 1, p33-41, 9p