https://bereket-haileab.geology.sites.carleton.edu/files/original/703333991f5bf96ca475d85ee46666a7.jpg f534f6a840f1f7e29eb11c5f8cc2e05f 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 BH250-3 Subject The topic of the resource Garnet Mica Schist Description An account of the resource Major Minerals: garnet, muscovite, quartz <br />Minor Minerals: chlorite <br />Click <a href="https://www.digitalscope.org/ViewerUI/?SlideId=7240010f-7c17-472d-9b02-191fd6ae5161">here</a> for a high resolution scan<br /><br /> <p>BH250-3 is a garnet schist, a highly schistose, medium- to high-grade metamorphic rock dominated by garnet and mica. The rock contains euhedral garnets that show signs of retrograde metamorphism, evidenced by the formation of chlorite along the margins and cracks, particularly in the "fish-tail" terminations of the garnets.</p> <p>Notably, the rock also features mica fish—distinctive, lens-shaped or elongate mica crystals aligned within the foliation. These structures are common in deformed metamorphic rocks and serve as indicators of shear sense and strain localization. The presence of both garnet fish and mica fish suggests dynamic metamorphism, with deformation and metamorphic reactions occurring simultaneously.</p> Source A related resource from which the described resource is derived From the rock collection of Bereket Haileab. Sample BH250-3. 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=ad48c50a142b48cd93cddfbafe2abe29" 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=3475486a471e46abb795a55c0acb1f83">here</a><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1cJgg0c-3xde8skRQOh5zSEoprtnikB4m/preview" allow="autoplay"></iframe><br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1NeOckZJgIGCQUOV4QKSxrRK_D4RGpf8h/preview" allow="autoplay"></iframe> <br /><br /><iframe width="100%" height="480" src="https://drive.google.com/file/d/1nPaE-to0S9SC5jBjMEgDz2g3LFq4RCxk/preview" allow="autoplay"></iframe> Creator An entity primarily responsible for making the resource Bereket Haileab Chlorite Chlorite alteration Ductile deformation Euhedral garnet Fish-tail garnet Foliated Metamorphic Rock Garnet Garnet schist Graphite Mica fish Retrograde Metamorphism Schistosity