https://bereket-haileab.geology.sites.carleton.edu/files/original/5fad95d87e08e1919c5d3caeaf3599d2.jpg 7fa404a830f4d5cbfa8717067a3bb0a1 Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource Igneous Rocks Subject The topic of the resource This collection covers both volcanic and intrusive rocks, including rhyolites, granites, diorites, andesites, basalts, gabbros, diabases, pumices, obsidians, syenites, phonolites, peridotites, carbonatites, dacites, trachyte, dunites, xenoliths, ignimbrites, and pegmatites. Creator An entity primarily responsible for making the resource Bereket Haileab Source A related resource from which the described resource is derived Housed in Anderson Hall, Carleton College. Format The file format, physical medium, or dimensions of the resource Thin sections, thin section scans, hand samples, hand sample images, photomicrographs, chemical analyses (major elements, trace elements and REE analyses for selected samples). Thin section and hand sample Dublin Core The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/. Title A name given to the resource BH250-101 Subject The topic of the resource Alta Stock Granodiorite Description An account of the resource Major Minerals: plagioclase, biotite, hornblende<br /><br /> <p data-start="97" data-end="289">The Alta Stock, located in Alta, Utah, is a well-known granodioritic intrusion notable for its role in regional Mesozoic magmatism, contact metamorphism, and hydrothermal skarn mineralization.</p> <p data-start="291" data-end="942">Geochemically, the stock ranges from intermediate to felsic composition (see table below). It intrudes Mississippian–Pennsylvanian carbonate and clastic sedimentary rocks, producing a prominent contact metamorphic aureole. Metamorphic assemblages within this aureole include periclase, pure forsteritic olivine, tremolite, talc, diopside, wollastonite, ludwigite, vesuvianite, and recrystallized calcite and dolomite. These assemblages reflect both high-temperature metamorphism and skarn-type alteration, especially in carbonate-rich units exposed to metal-bearing hydrothermal fluids. Hornfels facies also developed in surrounding sedimentary rocks.</p> <p data-start="944" data-end="1117" data-is-last-node="" data-is-only-node="">Additionally, the Alta Stock is spatially associated with mineralization in the Little Cottonwood mining district, hosting or occurring near historic silver-lead-zinc veins.</p> <br /><iframe width="1800" height="100" src="https://docs.google.com/spreadsheets/d/e/2PACX-1vS4nyqCmZQGn3t6vX4g4nhDPwHMBaKrigt1LaY2pykWbBGXB1wNb6FYArx625I-JTtD7lyg4uz1OS1r/pubhtml?gid=1229250826&amp;single=true&amp;widget=true&amp;headers=false"></iframe> Coverage The spatial or temporal topic of the resource, the spatial applicability of the resource, or the jurisdiction under which the resource is relevant Location: Alta, Utah, USA Nearby Geographic Features: Alta Stock GPS Coordinates: 40°34'53.31"N, 111°36'58.20"W Source A related resource from which the described resource is derived From the rock collection of Bereket Haileab. Sample 101. Housed at Carleton College in Minnesota. Type The nature or genre of the resource Thin section and hand sample Relation A related resource <iframe width="100%" height="600" style="border: 0;" src="https://carleton.maps.arcgis.com/apps/instant/media/index.html?appid=29d89ab9ac8c44c5921e8b1c0eb81a37" frameborder="0" allowfullscreen="allowfullscreen">iFrames are not supported on this page.</iframe><br />View on ArcGIS Online <a href="https://carleton.maps.arcgis.com/home/item.html?id=29d89ab9ac8c44c5921e8b1c0eb81a37">here</a><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1ckMCnAtkQg-P5hUAsek8QVNC29jXk3M-/preview" allow="autoplay"></iframe> <br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/12JASs859L_VJ2dilhwhO7c81yPCm05tR/preview" allow="autoplay"></iframe> <br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1Lgneqn_qReIblmBYVQqxd9cAJ-6ARxf8/preview" allow="autoplay"></iframe> <br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1dudMmtz36vJz1grZBj8nK_7HpWPvy-KF/preview" allow="autoplay"></iframe> <br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/12_O9HzGFxzqOnt4CPG_8IBoR9AqFwAdM/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1bQ39apjJI-1uiXfGWEos66eemGGsvsb7/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1xjbtf9SdzVnPY3iOEoKvIWcyQoPKYxzF/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1MAZp6OLTHsjvxy2MrXGIXvVvMlOgIo5M/preview" allow="autoplay"></iframe><br />TAS diagram of sample BH250-101. Creator An entity primarily responsible for making the resource Bereket Haileab Alta stock Carbonate Replacement contact metamorphism Diopside felsic granodiorite Hornfels Facies Hydrothermal alteration igneous Little Cottonwood Mining District Ludwigite Metamorphic Aureole Ore Deposits Periclase plutonic Silver-Lead-Zinc Veins skarn Skarn Formation Talc Thermal Metamorphism Tremolite Vesuvianite Wasatch Mountains Wollastonite