 | | Report (issue) | | ABSTRACT Outcrops of limestone and(or) dolomite marble are present throughout the San Bernardino National...the year 2000. White marble in the Bonanza King and the Nopah formations, the lower and middle members...members of the Bird Springs Formation, and marble in the Desert Divide Group have high resource potential for...consisting of limestone (CaCOa) or dolomite (CaMg{CO3}2) marble, are present in the eastern San Gabriel, San Bernardino...layers of metachert, siliceous schist, interbedded marble and quartzite, and greenstone also occur within |  | | Journal (article/letter/editorial) | | gold mineralisation at the Zloty Stok, Southwest Poland S. Z. Mikulski* and S. Speczik Inorganic and organic...from the Zloty Stok Au–As deposit in Southwest Poland have been studied. Magnetite-rich calcite-dolomite...Institute, 4 Rakowiecka street, 00-975 Warsaw, Poland *Corresponding author, email stanislaw.mikulski@pgi...schists; 2: Streaky quartz-plagioclase gneisses; 3: Dolomitic marbles; 4: Late Variscan granite; 5: Lamprophyre...tectonic-lithological structures in the older (Cambrian to Lower Carboniferous) sedimentary-metamorphic rocks.27 |  | | Report (issue) | | rocks are thought to be late Precambrian, 2 » iI Lower Cambrian, H: equivalents of the Dalton, 6 I '...derived from preferential erosion in the east-of the lower part of the | 1 Stockbridge and older rocks. This...and Everett Formations, all of Cambrian(?) and Lower Cambrian age, the Canaan Mountain Schist has tentatively...tentatively been . 15- assigned a Cambrian(?) and Lower Cambrian age. 16 17 Structural geology % ! I...foliation in rocks that range from mylonite schist, 10- mylonite gneiss to blastomylonite and have abundant |  | | Report (issue) | | Geologic Map of the Chittenden Quadrangle Rutland County, Vermont By Nicholas M. Ratcliffe U.S. Geological...where abundant thick glacial till is present. The lower slopes of the hills bounding Route 4 in the vicinity...slightly because of rapid facies changes within the lower, clastic part of the cover section. From west to...schist (Ys), dolomite marble (Ydm), and calc-silicate rocks (Yes). Dolomitic marble (Ydm) occurs as coarse-grained...tapering to a feather edge. Commonly the dolomite marble contains layers rich in either fibrous or coarse |  | | Journal (article/letter/editorial) | | stratigraphic succession so as to indicate the lower limb of a recumbent fold. The Deolapar Nappe can...calcareous rocks (calc-silicate rock, calcitic and dolomitic marble) dominate the northern part of the SSFB, the...curvilinear tract of calc-silicate rock and calcitic marble (Lohangi Formation) of the Sausar Group. These...2001, and references therein). Thin sheets of dolomitic marble rest over the gneisses near Dahoda and Manegaon...Dobmittc k b k - B i c h u a Formation ( ? Calcitic Marble Lohangi Formation Cot-silicate Rocks a Tirodi |  | | Journal (article/letter/editorial) | | carbonate rocks are found in the sec tion of the lower (Iyengra) and upper (Dzheltula) series. In the Iyengra...thinking of geologists that the very presence of marble, calciphyre, or carbonate-silicate rocks is often...silicate-carbonate rocks can be distinguished: a) dolomitic marble and calciphyre, b) magnesian silicate-calcite...exposures on the Timpton and Aldan rivers). Dolomitic Marble and Calciphyre The marbles are dense fine-grained...spinel + magnetite. On fresh fracture surfaces the marble and calciphyre generally appear massive; only on |  | | Report (issue) | | Geologic Map of the Chester Quadrangle, Windsor County, Vermont By Nicholas M. Ratcliffe1 Open-File Report...ROCKS OF THE CHESTER DOME Waits River Formation (Lower Devonian and Silurian) Dark gray to black, fine-grained...punky-weathered limestone and schist Northfield Formation (Lower Devonian and Silurian) Schist member Dark-gray to...coticule 1-2 cm thick (denoted by a leader and a lower case "c") or layers of dark-green well-foliated...recognizable enclave of porphyroclastic gneiss widiin die mylonite. Excellent outcrops showing die tectonic laminations |  | Owen, J. Victor, Hanley, Jacob J., Kerr, Mitchell J., Stimson, Matthew, Boucher, Brandon (2019) Geochemistry of pink corundum-bearing feldspathic gneiss, Frenchvale quarry, Cape Breton Island, Canada: metamorphism of albitised, Fe-poor clastic rocks. Mineralogical Magazine, 83 (2) 249-260 doi:10.1180/mgm.2018.165 | Journal (article/letter/editorial) | | corundum-bearing feldspathic gneiss, Frenchvale Quarry, Cape Breton Island: metamorphism of albitized...2018.165. Abstract Frenchvale Quarry, once mined for dolomitic marble, contains pink corundum-bearing...associated with carbonate platformal rocks (now marble), corundum is confined to the feldspathic rocks...cutting dolomitic marble (Pêcher et al., 2002), but elsewhere, ruby occurs in calcitebearing marble associated...feldspathic gneiss associated with dolomitic marble is exposed in a 0.6 km long quarry near Frenchvale, Cape Breton |  | | Report (issue) | | GEOLOGIC MAP OF THE TWIN LAKES 15' QUADRANGLE, FERRY COUNTY, WASHINGTON by Kenneth F. Fox, Jr. , and George...interlocking grains of quartz (variably recrystallized mylonite), feldspar (in some layers) with scattered intergranular...white dolomitic and/or calcitic marble, gray calc-silicate gneiss, and dark gray schist Marble ranges...4, T.34 N., R.35 E. (Buckhorn Creek area) dolomitic marble contains disseminated olivine, diopside, spinel...lineation and mylonitic fabric, and from unit Tts by lower metamorphic grade. KJb Barnaby Creek pluton (Cretaceous |  | | Report (issue) | | STRATTON MOUNTAIN QUADRAiNGLE Hoosac Formation (Lower Cambrian-upper Proterozoic) Lustrous green chl...(±paragonite)quartz schist White dolomitic marble and pink calcitic dolomitic marble Coaley black, lustrous phyllite...biotite-muscovite quartz schist Dalton Formation (Lower Cambrian and upper Proterozoic) Dark gray to sooty-black...rocks, but unit commonly is a highly deformed mylonite-augen.gneiss because of intense Paleozoic deformation...commonly associated with thrust faults and ' mylonite zones; arrow shows direction and amount of plunge |  | | Journal (article/letter/editorial) | | overlain by a thinner unit of allochothous dolomitic marble, as discussed in our paper (pp. 113-114)....resulted in tectonic slivers of TG within dol. Marble at higher structural levels (splay thrusts?). The...the gneiss and overlying and /ore underlying dolomitic marble are shown in West’s map as folded patches...major westerly structural closures in TG and dol. Marble are shown in our map (Fig. 2). However, some minor...apparent absence of typical shear zone rocks (mylonite etc) in Deolapar area is a genuine problem, as |  | | Journal (article/letter/editorial) | | aspects of the geology of the uranium deposits in lower Proterozoic carbonates of one district. The inference...concentrated in only one stratigraphic zone of the thick lower Proterozoic sequence, that the uraninite is always...folding created beds and lenses of uranium-bearing dolomitic marbles; the metamorphic processes also involved...stresses associated with folding and shearing in the lower Proterozoic rocks. -- J. K. Hartsock * ** The problem...aspects of the geology of the uranium deposits in lower Proterozoic carbonates of one district, taken as |  | | Journal (article/letter/editorial) | | Attic-Cycladic Massif (Greece) on top of a lower-grade dolomite marble unit. The Tertiary thrust represents...dolomite marble during the thrusting of the hotter upper plate. Conversely, the hanging wall marble unit...between the initial temperatures of the lower and upper marble units, and this leads to the conclusion...eclogites generally lie at higher pressures and lower temperatures than most normal geothermal gradients...underthrusting of the high P-T rocks by a package of cooler lower-grade rocks accompanied by erosion or tectonic denudation |  | | Report (issue) | | . . . . . . . . . . . . . . . . . . 11 Murphy Marble. . . . . . . . . . . . . . . . . . . . . . . ....Series are conformably overlain by the Lower Cambrian (?) and Lower Cambrian Chilhowee Group. Based upon...phyllite and schist with minor units of impure dolomitic marble (Hadley and Gold- The Carolina Geological...1907) Nottely Quartzite Andrews Schist Murphy Marble Valleytown Formation Brasstown Schist Tusquitee...Formation Nottely Quartzite Andrews Formation Murphy Marble This Guide Murphy Group Mineral Bluff Formation |  | | Report (issue) | | occurred late in the history of, or post-dates the mylonite formation, if the muscovite granite in the Picacho...outlier of trachyte at 1:00 low and the crystalline mylonite rocks underneath Newman Peak at 1:00 high. If...(the Wyomola conglomerate by Briscoe, 1967) in the lower part of the section. Base and precious metal mineralization...Road junction after dip in road . area. 13.8 Lower ramadas, continue up road to west. 13.9 Upper...and probably underlies the town of Wickenburg. A quarry several hundred feet west of road exposes unaltered |  | | Report (issue) | | Gold deposits of the West Springs area, Union County, South Carolina Dennis J. LaPoint................23 Geology of Masters’ Kiln and history of the marble occurrences in Laurens and Union Counties, South...onto Quarry Road. Go 1.0 miles (8.7) and turn left into STOP 1 (Vulcan Materials Pacolet Quarry). Turn...Turn right out of quarry and go 1.0 (9.7) miles to US 176. Turn left onto US 176. Go 8.1 (17.8) miles and...walk west about 100 m into old quarry STOP 2 (Hyder Bald Rock Quarry). Drive 0.4 (28.5) back out and |  | Shi, Yonghong, Liu, Xiaoyu, La, Xiaofeng, Peng, Chunlei, Hou, Zhenhui, Zhou, Antai, Wang, Juan (2022) Tectonic Evolution of the Southern Dabie Orogenic Belt, China: Insights from Peak P–T Conditions and U–Pb Zircon Dating of the Susong Metamorphic Complex. Minerals, 12 (10) 1201 doi:10.3390/min12101201 | Journal (article/letter/editorial) | | early Neoproterozoic, Palaeozoic and Triassic-lower Jurassic. Therein, a 259–190 Ma (Group V) from zircons...late Palaeozoic, and subducted into the middle-lower crust of 20–40 km depth as a whole, corresponding...The Foziling Group consists mainly of schist and marble [30–32], which was once considered as a non-metamorphosed...amounts of metabasic and ultrabasic rocks, granulite, marble, and diamond-bearing eclogite [2,27–29,37,39–43]...diamond-bearing eclogite, epidote–biotite–plagioclase gneiss, marble, and small amounts of schist, jadeitite, and quartzite |  | | Report (issue) | | because post-Paleozoic erosion has cut deep into lower levels of some structurally higher crystalline thrust...deposits of the Oswegatchie Group is the Gouverneur Marble that consists of five members, two of which contain...Member A at the base consists of thick, calcitic, dolomitic, and siliceous marbles. Member B is a thin, pyritic...quartz-feldspar granulite. To the east, the Gouverneur Marble correlates with carbonate rocks of the Cedar River...Formations. The previously defined upper and lower marble may be stratigraphically equivalent in the Northwest |  | | Journal (article/letter/editorial) | | Samples of the calcite-rich Shelburne Marble collected at the Pfizer Quarry in Adams, Massachusetts, show an...metamorphic environment. Key words: grain growth; marble fabric; second-phase particles. I N T RO DU C...very small (<500 m2 ) section of the wall of a marble quarry were examined. These relatively pure calcite...in geologically short periods of time even under lower greenschist facies conditions ( Fig. 1 ). The grain...Ordovician Shelburne Marble (Unit E) of the Stockbridge Formation (Fig. 2). Prior to the lower Palaeozoic closing |  | Dequan, Zhang, Hongquan, She, Chengyou, Feng, Daxin, Li, Jinwen, Li (2009) Geology, age, and fluid inclusions of the Tanjianshan gold deposit, western China: Two orogenies and two gold mineralizing events. Ore Geology Reviews, 36 (1) 250-263 doi:10.1016/j.oregeorev.2009.06.002 | Journal (article/letter/editorial) | | folds. These gold orebodies, composed of altered mylonite schist type ore and altered dyke type gold ore...mainly within altered carbonaceous quartz–sericite mylonite schist of a highly strained zone and locally in...pyrite (py 1), was restricted to the carbonaceous mylonite schist within the NW-trending shear zone. Sericite...hornblende–biotite–plagioclase gneiss, schist, and marble. Whole-rock Sm–Nd isochron and Rb–Sr and U–Pb zircon...Wandonggou Group in NBQB consist of marble with quartz–sericite schist at lower levels, and carbonaceous quartz–sericite |  | | Journal (article/letter/editorial) | | ISOGRADS IN REGIONALLY METAMORPHOSED SILICEOUS DOLOMITIC MARBLE OF THE SHARBOT LAKE DOMAIN, GRENVILLE PROVINCE...describe the mineralogy and petrology of siliceous, dolomitic marbles in the Sharbot Lake domain, as exposed...this study suggest that the Sharbot Lake domain marble and associated rock in the area underwent regional...greenschist- to amphibolite-facies conditions. Keywords: marble, field gradient, isograd, T–X(CO2) diagram, fluid...of the best preserved and most easily accessible marble belts in North America, for which geochemical data |  | | Report (issue) | | include granite and metamorphic rocks, black granite, marble, and sandstone, together with a variety of minor........................5 Mount Clarence historic quarry .....................................................................5 Albany Monumental Masons quarry .....................................................................................13 Phill’s quarry ....................................................................................17 American quarry .............................................. |  | | Journal (article/letter/editorial) | | metamorphic rocks in fault contact along the Lynd Mylonite Zone with the Palaeoproterozoic to Mesoproterozoic...elements of the Townsville region. BMZ, Balcooma Mylonite Zone; CCS, Camel Creek Subprovince; GCS, Graveyard...Graveyard Creek Subprovince; LMZ, Lynd Mylonite Zone. Province, three new SHRIMP U – Pb zircon ages provide...1550 Ma in the area immediately west of the Lynd Mylonite Zone (Black et al. 2005) (Figure 1). In the Greenvale...Lynd domain lies between the Lynd Mylonite Zone and the Balcooma Mylonite Zone and consists of a metamorphic |  | | Report (volume) | | Survey, the National Park Service, and the 1oudoun County Department of Environmental Resources Cover:...Survey, the National Park Service, and the Loudoun County Department of Environmental Resources Structure...Survey, the National Park Service, and the Loudoun County Department of Environmental Resources." "Structure...K. II. Maryland Geological Survey. III. Loudoun County (Va.). Dept of Environmental Resources. IV Title............................ Late Proterozoic and Lower Cambrian Rocks ................................ |  | | Report (issue) | | diopside of diamond-free ultrahigh-pressure dolomitic marble from the Kokchetav Massif, Kazakhstan . ....SU29 757/779 SU19 207/214 727/755 Donghai 119° Marble-amphibolite unit UHP Sulu gneiss HP Haizhou gneiss-quartzite...metamorphic conditions more likely, and can record lower-temperature events during recrystallization. Three...Quartzofeldspathic gneiss 0.05 7.1 0.080 0.06 760 SU-29 — Mylonite 840 0.07 0.08 800 727 ± 15 (3/0.02) 755 ±...distinguish between eclogite-facies zircon growth and lower-grade metamorphic zircon growth. Analytical Technique |
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