https://bereket-haileab.geology.sites.carleton.edu/files/original/a3aa883ef52120682538e36290ec1118.jpg 72d192db72a1bda65c0855ea368c31db 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 Metamorphic Rocks Subject The topic of the resource This collection includes slates, phyllites, schists, gneisses, eclogites, marbles, quartzites, skarns, granulites, and mylonites. 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 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 BH250-47 Subject The topic of the resource Gneiss Description An account of the resource Major Minerals: sillimanite, : cordierite? Minor Minerals: biotite, muscovite, plagioclase, quartz, microcline, zircon Optics: fibrous or fibrolitic aggregates of sillimanite BH250-47 is from the Beartooth Mountains, which expose high-grade Archean gneisses and migmatites that record very high-temperature, high-pressure mineral assemblages. This rock hosts sillimanite- and cordierite-bearing metapelitic units and migmatites. The sillimanite occurs as fibrous to fibrolitic aggregates. his mineral pair is characteristic of pelitic (Al-rich) metasediments, such as original shales and siltstones. Metamorphic grade — BH250-47 reached very high temperatures, corresponding to upper amphibolite to granulite facies, approaching migmatitic conditions. 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: Beartooth Mountains, Wyoming, USA Nearby Geographic Feature: Beartooth Mountains GPS Coordinates: 44°56'12.14"N, 109°37'21.49"W Source A related resource from which the described resource is derived From the rock collection of Bereket Haileab. Sample BH250-47. Housed at Carleton College in Minnesota. Type The nature or genre of the resource Thin section Relation A related resource <iframe width="100%" height="600" style="border: 0;" src="https://carleton.maps.arcgis.com/apps/instant/media/index.html?appid=aa8e14e39f434cdbb0ea762e2b87e03e" 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=31b92f59cf534183ae3b49df8e978ed0">here</a><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1VEijqkC_Qoy4AjiyOKEL0hxkINWGFwZh/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/19gDrfXqYA4k2RuZalwaET0Nq4EuDhiB8/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1sa-Gi1L7xFWAUmNAaThwAt1SGX4fmeAA/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/17XYTfOlS0l4FpuzzqjYgcqpKcfQhrsvp/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1_yT04zw2ZtGng2yCE0jRooaw9RFeYoTA/preview" allow="autoplay"></iframe> Creator An entity primarily responsible for making the resource Bereket Haileab Contributor An entity responsible for making contributions to the resource Bereket Haileab aluminum-rich metamorphic rock Beartooth Mountains Biotite cordierite fibrolitic sillimanite gneiss granulite facies high-grade metamorphic metamorphic metamorphic rock microcline pelitic protolith Quartz sillimanite sillimanite aggregates Wyoming geology Zircon