Ettore Artini, Giovanni Boeris, Dott. Francesco Sansoni, Dott. Filippo Tognini, Gilberto Melzi, Dott. Francesco Sansoni, G. Bartalini, Giovanni Boeris, Luigi Bombicci, Francesco Sansoni, Ettore Artini, Dott. Francesco Sansoni, Eugenio Scacchi, Eugenio Scacchi, Luigi Brugnatelli, Ettore Artini, Italo Chelussi, G. Grattarola, Giovanni Boeris, G. Grattarola, Italo Chelussi, Dott. Francesco Sansoni,
... Raddusa in Sicilia Per Eugenio Scacchi in Napoli, Diabase Di Pettenasco Sul Lago D'orta Per Italo ...
1890 - Gale Group | NCCO SciTechMed 2 of 2
... are used as additives in cement production. Although diabase is a volcanic rock, it has not been ... activation in order to increase the usability of diabase in cement production. Firstly diabase samples were analyzed for chemical, mineralogical compositions and pozzolanic activity. The diabase was first subjected to dry grinding separately from ... was achieved.The pozzolanic activity of the ground diabase gradually increased depending on the grinding time. The ... of 10%, 30% and 50% addition of natural diabase by weight on the characteristics of cement pastes ...
Tópico(s): Magnesium Oxide Properties and Applications
2022 - Elsevier BV | Case Studies in Construction Materials
Carlo Somigliana, Ettore Artini, Francesco Sansoni, Riva Carlo, Italo Chelussi, F. Koristka Di Milano, Gilberto Melzi, Giuseppe Bartalini, Pasquale Franco, R. Corpo Delle Miniere, Carlo Riva, Doctor Giovanni Gianotti, Dr. Giovanni D'Achiardi, Doctor Luigi Busatti, Rina Monti, A. Verri, E. Artini, R. Corpo Delle Miniere, Italo Chelussi, Italo Chelussi,
... Eruttivo Dello Stromboli Cominciato Il 24 Giugno 1891, Diabase Uralitizzata Od Epidiorite Della Torre Del Romito Nei ...
1893 - Gale Group | NCCO SciTechMed 2 of 2
Anupam Banerjee, Ramananda Chakrabarti,
... samples of a hand-specimen sized spheroidally weathered diabase (synonymously used as dolerite or microgabbro) from southern ... of the ~2.37 Ga old un-weathered diabase (UW) dike was also analyzed. X-ray micro- ... lower values than that of the un-weathered diabase dike which shows a δ44/40Ca value of ... Alteration) values and Al/Ca than the UW diabase while samples having higher δ44/40Ca show lower CIA and Al/Ca than the UW diabase. The weathered sample having the lowest δ44/40Ca ( ... of residual clinopyroxene and plagioclase in the weathered diabase, due to selective weathering of these minerals. Since ...
Tópico(s): Groundwater and Isotope Geochemistry
2018 - Elsevier BV | Chemical Geology
Chao Liu, Liang Gu, Jian Wang, Shanghua Si,
... is rarely documented in previous studies. Taking the diabases and their contact metamudstones from the Funing Formation, ... and properties, and C, O isotopes of intrusive diabases and/or contact metamudstones, aiming to unravel reservoir characteristics and forming controls of diabase and metamudstones. After diabase intrusion, four lithofacies, i.e., diabase center, diabase margins, slates, and hornfels, were formed. Meanwhile, various ... micropores, cooling fractures, and structural fractures in the diabases, and recrystallizational and matrix-dissolved micropores, hydrothermal and ...
Tópico(s): earthquake and tectonic studies
2018 - Elsevier BV | Journal of Petroleum Science and Engineering
Proterozoic diabase of the Dripping Spring range occurs as sills in the Proterozoic Apache Group and the Troy Quartzite ... in basement rocks. The aggregate thickness of the diabase sills and intrusive sheets averages about 450 m ... has apparently mobilized copper and other metals from diabase. The freshest diabase samples average about 120 ppm copper with little ... the most completely altered rocks. In actinolitic alteration, diabase may either gain or lose copper during alteration. Chloritic alteration constitutes roughly 70 percent of the diabase alteration in the study area, where alteration averages ...
Tópico(s): earthquake and tectonic studies
1998 - | Economic Geology
Kenneth P. Kodama, ALLISON MOWERY,
... Article| July 01, 1994 Paleomagnetism of the Sassamansville diabase, Newark Basin, southeastern Pennsylvania: Support for Middle Jurassic ... P. KODAMA, ALLISON MOWERY; Paleomagnetism of the Sassamansville diabase, Newark Basin, southeastern Pennsylvania: Support for Middle Jurassic ... Search Abstract A paleomagnetic study of the Sassamansville diabase, which intrudes the Passaic Formation red beds of ... was conducted to constrain the age of the diabase's magnetization. Nine sites were collected from the ...
Tópico(s): Geological formations and processes
1994 - Geological Society of America | Geological Society of America Bulletin
... formations. The oldest of these is the Nipissing diabase, which forms a complex of sills and dikes ... and Tilton, and the Eagle granite. An olivine diabase dike which cross-cuts the Cutler granite and ... plot of whole-rock analyses from granophyre and diabase of the Nipissing diabase on an isochron diagram yields an age of . ... results are interpreted as showing that the Nipissing diabase was intruded about 2,155 m.y. ago ... ago. This age of intrusion of the Nipissing diabase limits the age of the Proterozoic Huronian formations ...
Tópico(s): Geology and Paleoclimatology Research
1965 - University of Chicago Press | The Journal of Geology
Dikes of granite crowded with rounded masses of diabase are described in detail and their origin discussed. Where diabase masses are closely packed, outcrops appear as diabase dikes cut by a network of granite veins ... non-dilational and of replacement origin. Margins of diabase masses are very fine grained and resemble diabasic ... secondary features formed largely by recrystallization of solidified diabase. Skialithic bodies are locally numerous within the dikes and resemble the diabase masses in size, shape, and disposition. They are ...
Tópico(s): Geology and Paleoclimatology Research
1962 - University of Chicago Press | The Journal of Geology
... Article| June 01, 1953 PETROLOGY OF GRANOPHYRE IN DIABASE NEAR DILLSBURG, PENNSYLVANIA PRESTON E HOTZ PRESTON E ... Citation PRESTON E HOTZ; PETROLOGY OF GRANOPHYRE IN DIABASE NEAR DILLSBURG, PENNSYLVANIA. GSA Bulletin 1953;; 64 (6): ... of granophyre occur in the upper part of diabase bodies of Triassic age in southeastern Pennsylvania. One ... drill. Drill core specimens show a gradation from diabase to granophyre.New data include 10 chemical analyses, ... specimens from the drill core. The sequence, from diabase to granophyre, includes a chilled zone that represents ...
Tópico(s): Geochemistry and Geologic Mapping
1953 - Geological Society of America | Geological Society of America Bulletin
Gary E. Stinchcomb, Hyojin Kim, Elizabeth A. Hasenmueller, Pamela Sullivan, Peter B. Sak, Susan L. Brantley,
... FeO concentrations and regolith thickness: a Pennsylvania (PA) diabase (10.15%; 3.8 m), a Virginia (VA) diabase (10.49%; 1.4 m), and a VA ... observed WIF in the VA granite and PA diabase where *R*9~(aq)~ \> *R*^0^, while at the site that lacked WIF -- the VA diabase -- *R*9~(aq)~ \< *R*^0^, particularly during the wet season. In the VA diabase, the presence of swelling clays (smectite) limits the ... effect on O~2~ consumption in the PA diabase because the PA diabase is more fractured. A compilation of dissolved soil ... composition, notably tortuosity of pores. In the VA diabase, we observed *R*9~(aq)~ \< *Rz* occasionally during ...
Tópico(s): Geophysical and Geoelectrical Methods
2018 - Yale University | American Journal of Science
Xinghai Lang, Xuhui Wang, Juxing Tang, Yulin Deng, Zhiwei Cui, Qing Yin, Fuwei Xie,
Diabase dikes are extensively distributed in the Xiongcun porphyry copper–gold district in the southern margin of ... and Sr–Nd–Pb isotopic data for these diabase dikes. Zircons from one of the Xiongcun diabase dikes yielded an emplacement age of 165.3 ± 1.0 Ma. The Xiongcun diabase dikes display subalkaline features and tholeiite compositions. They ... e.g., Nb, Ta, and Ti). The Xiongcun diabase dikes exhibit relatively low ratios of ( 87 Sr/ ... research results, these findings suggest that the Xiongcun diabase dikes and Early Mesozoic magmatic rocks in the ...
Tópico(s): earthquake and tectonic studies
2017 - Wiley | Geological Journal
Granites and diabases in the Mesozoic are two very important rock types in South China. We newly found granitic porphyry and two episodes of diabases within the Mugua Neoproterozoic gneissic granitic pluton in ... materials and / or crustal contamination. The early-stage diabase has similar chemical characters compared to the Mugua granitic porphyry. The late-stage diabase with no Eu anomalies has distinct composition compared to that of the early-stage diabase and granite porphyry with negative Eu anomalies. Granitic ...
Tópico(s): Radioactive element chemistry and processing
2013 - Science Press | Acta Petrologica Sinica
A geochemical study of Palaeozoic diabase dykes and sills from the Holy Cross Mts. and Upper Silesian Block (southeastern Poland) has revealed that these diabases are most probably derived from fractional crystallization of three distinct primary melts. All diabases are relatively evolved subalkaline tholeiites with low mg- ... island basalt (OIB). The compositional differences within the diabases are interpreted in terms of slightly variable degrees ... e.g. Zr/Nb, Y/Nb) in the diabases and Nd isotope data from the cogenetic diorites ...
Tópico(s): Geochemistry and Elemental Analysis
2010 - Polish Geological Institute | Geological Quarterly
A. J. Andrews, L. Owsiacki, R. Kerrich, David Strong,
... of Huronian-age clastic sediments intruded by Nipissing diabase sills and crosscut by regional-scale fault systems. ... mineralization always occurring adjacent to or within the diabase sills. Many of the mineralized structures crosscut the ... close proximity to the Huronian–Archean unconformity where diabase sills and steeply dipping Archean volcanic sequences coincide. ... in the ubiquitous occurrence of albite in Nipissing diabase wall rocks and sporadic occurrences of K-feldspar ... of a low-temperature, regional alteration of the diabases and a chlorite spotting alteration in the Huronian ...
Tópico(s): Geochemistry and Elemental Analysis
1986 - NRC Research Press | Canadian Journal of Earth Sciences
Qinghai Wang, Hao Yang, Debin Yang, Wen‐Liang Xu,
Diabase swarms widely intrude the late Paleoproterozoic to Mesoproterozoic sedimentary rocks in the northern margin of the ... rock geochemical data for representative samples of the diabase swarms intruding the Mesoproterozoic Wumishan and Xiamaling formations ... to elucidate the age and origin of the diabase swarms and their relationship to the fragmentation of ... basic magmatism leading to the generation of the diabase swarms during the Mid-Mesoproterozoic time. Geochemically, the ... and show weak positive Eu anomalies. Moreover, these diabase samples are characterized by enrichment in light rare ...
Tópico(s): earthquake and tectonic studies
2014 - Elsevier BV | Precambrian Research
Tong Hou, Zhaochong Zhang, M. Santosh, John Encarnación, Meng Wang,
Abstract Diabase dykes in Cihai, Beishan region, NW China are spatially and temporally associated with ‘Cornwall-type’ iron deposits. U–Pb dating of zircons from a diabase dyke using laser ablation inductively coupled plasma mass ... an Early Cretaceous crystallization age. Most of the diabases show low Mg-numbers, suggesting evolved magmas. The diabase dykes show typical ophitic or sub-ophitic textures, ... differentiation under relatively low oxygen fugacity conditions. The diabase dykes are characterized by minor variation in SiO2 ( ...
Tópico(s): earthquake and tectonic studies
2013 - Elsevier BV | Journal of Asian Earth Sciences
A new case of diabase-granite composite intrusions has been foundin Xinchang Ru'ao,eastern Zhejiang.The diabase is mainly composed of plagioclase(An=45～55, ... of the granite is similar to that of diabase,which elucidate that both diabase and granite were contemporary solidified.Geochemically,they share same calc alkaline series.Both diabase and granite are enriched in LREE, LILE(e. ... elemental and Sr-Nd isotopic characteristics of the diabase-granite composite intrusions are similar to that of ... in SE-Fujian.It is proposed that the diabase magma was derived from partial melting of sub- ...
Tópico(s): Geological and Geochemical Analysis
2007 - Science Press | Acta Petrologica Sinica
Phillip Larson, Howard D. Mooers,
... forms a glacial indicator dispersal train originating from diabase intrusions in the Nipigon region of northwestern Ontario. ... adjacent to the up-ice portion of the diabase provides a number of insights into the nature ... and temporally restricted. Contrasting erosion rates between the diabase and surrounding greenstone lithologies suggests that modern shield ... the Pleistocene. Pigeonite grain size coarsens over the diabase source, indicating that most of the pigeonite was quarried from outcrops as coarse diabase fragments. Down-ice of the diabase source the ...
Tópico(s): Methane Hydrates and Related Phenomena
2005 - NRC Research Press | Canadian Journal of Earth Sciences
CSJ Shaw, Grant M. Young, Christopher M. Fedo,
... have been penecontemporaneous with intrusion of highly irregular diabase bodies, which are interpreted as being older than the ~2.2 Ga Nipissing diabase. Complex shapes of diabase bodies and highly irregular contact relationships between diabase and argillites, including intrusions of sediment veins into diabase, support intrusion of the diabase into incompletely consolidated sediments. These data, together with chemical evidence of mixing of diabase, argillite, and other materials in the breccia bodies, ...
Tópico(s): Geological and Geochemical Analysis
1999 - NRC Research Press | Canadian Journal of Earth Sciences
S. J. Mackwell, M. E. Zimmerman, D. L. Kohlstedt,
... quantify the high‐temperature creep behavior of natural diabase rocks under dry deformation conditions. Samples of both Maryland diabase and Columbia diabase were investigated to measure the effects of temperature, ... strength. Flow laws determined for creep of these diabases were characterized by an activation energy of Q = ... the two rocks within experimental error, the Maryland diabase, which has the lower plagioclase content, is significantly stronger than the Columbia diabase. Thus the modal abundance of the various minerals ...
Tópico(s): Planetary Science and Exploration
1998 - American Geophysical Union | Journal of Geophysical Research Atmospheres
... The Degree of Alteration and Geomechanical Properties of Diabase in the Ankara Ophiolitic Mélange, Turkey RECEP KILIÇ ... The Degree of Alteration and Geomechanical Properties of Diabase in the Ankara Ophiolitic Mélange, Turkey. Environmental and ... such as dunite, harzburgite and pyroxenite; gabbro and diabases; basalt and pillow lavas; and pelagic sedimentary rocks. Geomechanical properties and micropetrographic index studies for the diabase were performed as a larger part of a ... compression tests and the compression wave velocity of diabase determined in the laboratory. Diabase is classified into ...
Tópico(s): Drilling and Well Engineering
1995 - Geological Society of America | Environmental and Engineering Geoscience
Peter C. Lightfoot, Hugh de Souza, W. Doherty,
... data are presented for 2.2 Ga Proterozoic diabase sills from across the Nipissing magmatic province of ... responsible for the variation in composition between quartz diabase and granophyric diabase seen within many of the differentiated intrusions. Uniform ... 5.9) characterize chilled margins and undifferentiated quartz diabases. These chemical signatures suggest the existence of a ... displaced towards the composition of shales. Most chilled diabases and quartz diabases have a similar Mg# (0.64 and 0. ... are an exception in that although the quartz diabase has La/Sm similar to the Nipissing magma ...
Tópico(s): earthquake and tectonic studies
1993 - NRC Research Press | Canadian Journal of Earth Sciences
Arthur Rose, D.C. Herrick, Peter Deines,
... rocks adjacent to sheets and dikes of Triassic diabase. In addition to large (10 8 tons) magnetite ... Sigma ) = 0.66ppm, n = 19) adjacent to the diabase and the lowest values (x = 6.6ppm, Sigma = ... and unaltered limestones. Thermally metamorphosed marbles adjacent to diabase but away from ore are depleted only in ... on a magmatic origin for skarnforming fluids. The diabase, which has a normal igneous delta 18 O ... in sedimentary rocks near the contact of the diabase. Exchange of 18 O with shales, argillaceous sandstones, ...
Tópico(s): Geochemistry and Elemental Analysis
1985 - | Economic Geology
John C. Mesner, L. C. Paul Wooldridge,
... and eolian sandstones. Jurassic basalt overlies the Triassic. Diabase of the same age intrudes all rocks of ... occurred in most of the Maranhao basin. Jurassic diabase intrusives have created very numerous, large domes that ... gravity methods can not differentiate domes caused by diabase sills and prospective pre-diabase folds. The magnetometer may be able to distinguish ... where moderate compressional folding occurred, are the pre-diabase structures not likely to be masked by diabase domes. The Sao Luis coastal basin has a ...
Tópico(s): Fish biology, ecology, and behavior
1964 - American Association of Petroleum Geologists | AAPG Bulletin
Маzhyn Skakov, Moldir Bayandinova, Igor Ocheredko, Baurzhan Tuyakbayev, Мakpal Nurizinova, А. В. Градобоев,
... of ultrahigh molecular weight polyethylene (UHMWPE) with a diabase filler obtained by flame spraying. Diabase of 10 wt.%, 20 wt.%, 30 wt.% and ... the friction coefficient. It has been shown that diabases do not have a negative effect on the ... to destruction during flame spraying. The introduction of diabase into the composition of UHMWPE with a content ... with an increase in the volume of the diabase filler, the wear resistance of the composite coating ... has been determined that with the addition of diabase, the microhardness of the coatings increases.
Tópico(s): Lubricants and Their Additives
2023 - Multidisciplinary Digital Publishing Institute | Polymers
... effect of the process of drying and dedusting diabase aggregate in high temperature.Experimental studies included the analysis of the influence of the addition of diabase dust on the improvement of the properties of ... roads.The mineral additive in the form of diabase dust, which constitutes natural waste, was inserted into ... performed studies resulted in the conclusion that adding diabase dust significantly increased the tightness and density of ... to model concrete.The insertion of the waste diabase dust into the concrete mix significantly improved the ...
Tópico(s): Recycled Aggregate Concrete Performance
2022 - Sciendo | Archives of Civil Engineering
Hui Rong, Yangquan Jiao, Xiaofeng Liu, Liqun Wu, Junmin Jia, Minqiang Cao,
... Compared with the sandstones far away from the diabase dikes, the sandstones near the diabase dikes are obviously depleted in REEs. ∑LREE content, ∑ ... an increase of the distance away from the diabase dikes. Carbonate cements in the sandstones comprise of ... to late stage. In the sandstones near the diabase dikes, the dolomite and siderite are partly dissolved, ... the ankerite were aroused by intrusion of the diabase dikes, resulting in the sandstones near the diabase dikes being depleted in REEs. The study suggests ...
Tópico(s): Geochemistry and Geologic Mapping
2020 - Elsevier BV | Applied Geochemistry
Liang Qiu, Wen-Xin Yang, Dan‐Ping Yan, Michael L. Wells, Jun-Ting Qiu, Tian Gao, Jian‐Meng Dong, Liang-Liang Zhang, Fangyue Wang,
Abstract Two phases of diabase-sill-forming magmatism are recorded within the Badu anticline where magmas were emplaced into upper Palaeozoic carbonates and clastic rocks ... SW South China Block, China. Zircons from these diabase units yield weighted mean U–Pb ages of ... subducting Palaeo-Tethys slab. The c . 190 Ma diabase sills indicate that the southwestern South China Block ... to within-plate tectonic regimes. The emplacement of diabase intrusions at depth may have driven hydrothermal systems, ... fugacity conditions recorded by the Au-bearing Badu diabase. In addition, data from inherited xenocrystic zircons within ...
Tópico(s): High-pressure geophysics and materials
2018 - Cambridge University Press | Geological Magazine
K. A. McCormick, Kevin R. Chamberlain, Colin J. Paterson,
... Sioux Quartzite occur. In southeastern South Dakota, Corson diabase sills or dykes have intruded the quartzite. U–Pb ID–TIMS baddeleyite data from a Corson diabase sample yield an upper intercept date of 1149.4 ± 7.3 Ma, suggesting the diabase is related temporally to the Midcontinent Rift (MCR). The similarity in age of this diabase to the Inspiration sill, Pigeon River, Kipling, and ... zone from the Abitibi dykes to the Corson diabase. The presence of the Corson intrusions 250 km ... northeast trend of known occurrences of the Corson diabase is also consistent with a mantle plume centre ...
Tópico(s): earthquake and tectonic studies
2017 - NRC Research Press | Canadian Journal of Earth Sciences