Harvey E. Belkin
Harvey Belkin is a Research Geologist (Scientist Emeritus) with the USGS Geology, Energy & Minerals (GEM) Science Center in Reston, VA.
Science and Products
Filter Total Items: 75
Factors affecting the geochemistry of a thick, subbituminous coal bed in the Powder River Basin: volcanic, detrital, and peat-forming processes
The inorganic geochemistry and mineralogy of three cores from the Anderson-Dietz 1 coal bed, a 15.2-m-thick subbituminous coal bed in the Tongue River Member (Paleocene) of the Fort Union Formation, were examined (1) to determine if the cores could be correlated by geochemical composition alone over a total distance of 2 km and (2) to identify the major factors that influenced the geochemistry of
Authors
S.S. Crowley, L.F. Ruppert, H. E. Belkin, R.W. Stanton, T.A. Moore
Mercury, arsenic, antimony, and selenium contents of sediment from the Kuskokwim River, Bethel, Alaska, USA
The Kuskokwim River at Bethel, Alaska, drains a major mercury-antimony metallogenic province in its upper reaches and tributaries. Bethel (population 4000) is situated on the Kuskokwim floodplain and also draws its water supply from wells located in river-deposited sediment. A boring through overbank and floodplain sediment has provided material to establish a baseline datum for sediment-hosted he
Authors
H. E. Belkin, H.M. Sparck
Sampling and major element chemistry of the recent (A.D. 1631-1944) Vesuvius activity
Detailed sampling of the Vesuvius lavas erupted in the period A.D. 1631-1944 provides a suite of samples for comprehensive chemical analyses and related studies. Major elements (Si, Ti, Al, Fetotal, Mn, Mg, Ca, Na, K and P), volatile species (Cl, F, S, H2O+, H2O- and CO2), and ferrous iron (Fe2+) were determined for one hundred and forty-nine lavas and five tephra from the A.D. 1631-1944 Vesuvius
Authors
H. E. Belkin, C.R.J. Kilburn, B. de Vivo
Fluid inclusion studies of ejected nodules from plinian eruptions of Mt. Somma-Vesuvius
Mt. Somma-Vesuvius (Naples, Italy) has erupted potassium-rich and silica-undersaturated products during a complicated history of plinian and non-plinian events. Coarse-grained cognate nodules are commonly found in the pyroclastics and are upper crustal in origin. We examined cumulate and subeffusive nodules from the 3800 y.B.P. Avellino. A.D. 79 Pompei, and A.D. 472 Pollena eruptions. Silicate-mel
Authors
H. E. Belkin, B. de Vivo
Chemistry of the lavas and tephra from the recent (A.D. 1631-1944) Vesuvius (Italy) volcanic activity
No abstract available.
Authors
H. E. Belkin, C.R. Kilburn, Benedetto De Vivo
Rock chemistry and fluid inclusion studies as exploration tools for ore deposits in the Sila batholith, southern Italy
The Sila batholith is the focus of an extensive petrogenetic research program, which includes an assessment of its potential to host granite-related ore deposits. Univariate and multivariate statistical techniques were applied to major- and minor-element rock geochemical data. The analysis indicates that the highest potential for mineralization occurs in corundum-normative, peraluminous, unfoliate
Authors
B. de Vivo, R. A. Ayuso, H. E. Belkin, A. Lima, A. Messina, A. Viscardi
The campi flegrei (Italy) geothermal system: A fluid inclusion study of the mofete and San Vito fields
A fluid inclusion study of core from the Mofete 1, Mofete 2, Mofete 5, San Vito 1, and San Vito 3 geothermal wells (Campi Flegrei, Campania, Italy) indicates that the hydrothermal minerals were precipitated from aqueous fluids (??CO2) that were moderately saline (3-4 wt.% NaCl equiv.) to hypersaline (> 26 wt.% NaCl equiv.) and at least in part, boiling. Three types of primary fluid inclusions were
Authors
Vivo B. de, H. E. Belkin, M. Barbieri, W. Chelini, P. Lattanzi, A. Lima, L. Tolomeo
Pre-field study and mineral resource assessment of the Sleetmule quadrangle, southwestern Alaska
No abstract available.
Authors
Marti L. Miller, H. E. Belkin, R. B. Blodgett, T. K. Bundtzen, J. W. Cady, R. J. Goldfarb, J. E. Gray, R. G. McGimsey, S. L. Simpson
Evidence for Late-Paleozoic brine migration in Cambrian carbonate rocks of the central and southern Appalachians: Implications for Mississippi Valley-type sulfide mineralization
Many Lower Paleozoic limestones and dolostones in the Valley and Ridge province of the central and southern Appalachians contain 10 to 25 weight percent authigenic potassium feldspar. This was considered to be a product of early diagenesis, however, 40Ar39Ar analyses of overgrowths on detrital K-feldspar in Cambrian carbonate rocks from Pennsylvania, Maryland, Virginia, and Tennessee yield Late Ca
Authors
P.P. Hearn, J. F. Sutter, H. E. Belkin
Fluid inclusion from drill hole DW-5, Hohi geothermal area, Japan: Evidence of boiling and procedure for estimating CO2 content
Fluid inclusion studies have been used to derive a model for fluid evolution in the Hohi geothermal area, Japan. Six types of fluid inclusions are found in quartz obtained from the drill core of DW-5 hole. They are: (I) primary liquid-rich with evidence of boiling; (II) primary liquid-rich without evidence of boiling; (III) primary vapor-rich (assumed to have been formed by boiling); (IV) secondar
Authors
M. Sasada, E. Roedder, H. E. Belkin
Fluid inclusion geobarometry from ejected Mt. Somma-Vesuvius nodules.
The results of a microthermometric study of fluid inclusions from seven cumulate and three 'skarn' nodules collected from the pyroclastics of three non-Plinian eruptive episodes are presented. -J.A.Z.
Authors
H. E. Belkin, B. de Vivo, E. Roedder, M. Cortini
Fluid inclusions in minerals from the geothermal fields of Tuscany, Italy
A reconnaissance study on fluid inclusions from the geothermal fields of Tuscany indicates that the hydrothermal minerals were formed by fluids which were, at least in part, boiling. Four types of aqueous inclusions were recognized: (A) two-phase (liquid + vapor) liquid rich, (B) two-phase (vapor + liquid) vapor rich, (C) polyphase hypersaline liquid rich and (D) three phase—H2O liquid + CO2 liqui
Authors
H. Belkin, B. de Vivo, G. Gianelli, P. Lattanzi
Science and Products
Filter Total Items: 75
Factors affecting the geochemistry of a thick, subbituminous coal bed in the Powder River Basin: volcanic, detrital, and peat-forming processes
The inorganic geochemistry and mineralogy of three cores from the Anderson-Dietz 1 coal bed, a 15.2-m-thick subbituminous coal bed in the Tongue River Member (Paleocene) of the Fort Union Formation, were examined (1) to determine if the cores could be correlated by geochemical composition alone over a total distance of 2 km and (2) to identify the major factors that influenced the geochemistry of
Authors
S.S. Crowley, L.F. Ruppert, H. E. Belkin, R.W. Stanton, T.A. Moore
Mercury, arsenic, antimony, and selenium contents of sediment from the Kuskokwim River, Bethel, Alaska, USA
The Kuskokwim River at Bethel, Alaska, drains a major mercury-antimony metallogenic province in its upper reaches and tributaries. Bethel (population 4000) is situated on the Kuskokwim floodplain and also draws its water supply from wells located in river-deposited sediment. A boring through overbank and floodplain sediment has provided material to establish a baseline datum for sediment-hosted he
Authors
H. E. Belkin, H.M. Sparck
Sampling and major element chemistry of the recent (A.D. 1631-1944) Vesuvius activity
Detailed sampling of the Vesuvius lavas erupted in the period A.D. 1631-1944 provides a suite of samples for comprehensive chemical analyses and related studies. Major elements (Si, Ti, Al, Fetotal, Mn, Mg, Ca, Na, K and P), volatile species (Cl, F, S, H2O+, H2O- and CO2), and ferrous iron (Fe2+) were determined for one hundred and forty-nine lavas and five tephra from the A.D. 1631-1944 Vesuvius
Authors
H. E. Belkin, C.R.J. Kilburn, B. de Vivo
Fluid inclusion studies of ejected nodules from plinian eruptions of Mt. Somma-Vesuvius
Mt. Somma-Vesuvius (Naples, Italy) has erupted potassium-rich and silica-undersaturated products during a complicated history of plinian and non-plinian events. Coarse-grained cognate nodules are commonly found in the pyroclastics and are upper crustal in origin. We examined cumulate and subeffusive nodules from the 3800 y.B.P. Avellino. A.D. 79 Pompei, and A.D. 472 Pollena eruptions. Silicate-mel
Authors
H. E. Belkin, B. de Vivo
Chemistry of the lavas and tephra from the recent (A.D. 1631-1944) Vesuvius (Italy) volcanic activity
No abstract available.
Authors
H. E. Belkin, C.R. Kilburn, Benedetto De Vivo
Rock chemistry and fluid inclusion studies as exploration tools for ore deposits in the Sila batholith, southern Italy
The Sila batholith is the focus of an extensive petrogenetic research program, which includes an assessment of its potential to host granite-related ore deposits. Univariate and multivariate statistical techniques were applied to major- and minor-element rock geochemical data. The analysis indicates that the highest potential for mineralization occurs in corundum-normative, peraluminous, unfoliate
Authors
B. de Vivo, R. A. Ayuso, H. E. Belkin, A. Lima, A. Messina, A. Viscardi
The campi flegrei (Italy) geothermal system: A fluid inclusion study of the mofete and San Vito fields
A fluid inclusion study of core from the Mofete 1, Mofete 2, Mofete 5, San Vito 1, and San Vito 3 geothermal wells (Campi Flegrei, Campania, Italy) indicates that the hydrothermal minerals were precipitated from aqueous fluids (??CO2) that were moderately saline (3-4 wt.% NaCl equiv.) to hypersaline (> 26 wt.% NaCl equiv.) and at least in part, boiling. Three types of primary fluid inclusions were
Authors
Vivo B. de, H. E. Belkin, M. Barbieri, W. Chelini, P. Lattanzi, A. Lima, L. Tolomeo
Pre-field study and mineral resource assessment of the Sleetmule quadrangle, southwestern Alaska
No abstract available.
Authors
Marti L. Miller, H. E. Belkin, R. B. Blodgett, T. K. Bundtzen, J. W. Cady, R. J. Goldfarb, J. E. Gray, R. G. McGimsey, S. L. Simpson
Evidence for Late-Paleozoic brine migration in Cambrian carbonate rocks of the central and southern Appalachians: Implications for Mississippi Valley-type sulfide mineralization
Many Lower Paleozoic limestones and dolostones in the Valley and Ridge province of the central and southern Appalachians contain 10 to 25 weight percent authigenic potassium feldspar. This was considered to be a product of early diagenesis, however, 40Ar39Ar analyses of overgrowths on detrital K-feldspar in Cambrian carbonate rocks from Pennsylvania, Maryland, Virginia, and Tennessee yield Late Ca
Authors
P.P. Hearn, J. F. Sutter, H. E. Belkin
Fluid inclusion from drill hole DW-5, Hohi geothermal area, Japan: Evidence of boiling and procedure for estimating CO2 content
Fluid inclusion studies have been used to derive a model for fluid evolution in the Hohi geothermal area, Japan. Six types of fluid inclusions are found in quartz obtained from the drill core of DW-5 hole. They are: (I) primary liquid-rich with evidence of boiling; (II) primary liquid-rich without evidence of boiling; (III) primary vapor-rich (assumed to have been formed by boiling); (IV) secondar
Authors
M. Sasada, E. Roedder, H. E. Belkin
Fluid inclusion geobarometry from ejected Mt. Somma-Vesuvius nodules.
The results of a microthermometric study of fluid inclusions from seven cumulate and three 'skarn' nodules collected from the pyroclastics of three non-Plinian eruptive episodes are presented. -J.A.Z.
Authors
H. E. Belkin, B. de Vivo, E. Roedder, M. Cortini
Fluid inclusions in minerals from the geothermal fields of Tuscany, Italy
A reconnaissance study on fluid inclusions from the geothermal fields of Tuscany indicates that the hydrothermal minerals were formed by fluids which were, at least in part, boiling. Four types of aqueous inclusions were recognized: (A) two-phase (liquid + vapor) liquid rich, (B) two-phase (vapor + liquid) vapor rich, (C) polyphase hypersaline liquid rich and (D) three phase—H2O liquid + CO2 liqui
Authors
H. Belkin, B. de Vivo, G. Gianelli, P. Lattanzi