{ "145978-21898205": { "datetime_modified":"20260303T091801", "datetime_start":"20260310T103000", "datetime_end":"20260310T120000", "has_end_time":1, "date_start":"2026-03-10", "date_end":"2026-03-10", "time_start":"10:30:00", "time_end":"12:00:00", "time_zone":"America\/Detroit", "event_title":"Kinship Interlocks: How the Intimate Exchange of Wealth, Status, and Power Generates Upper-Class Persistence", "occurrence_title":"", "combined_title":"Kinship Interlocks: How the Intimate Exchange of Wealth, Status, and Power Generates Upper-Class Persistence: Stone Center Speaker Series: Shay O'Brien", "event_subtitle":"Stone Center Speaker Series: Shay O'Brien", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Join the Stone Center for Inequality Dynamics as we host Shay O'Brien, James M. and Cathleen D. Stone Center Postdoctoral Associate at the Stone Center on Inequality and Shaping the Future of Work. Shay will present, \u201cKinship Interlocks: How the Intimate Exchange of Wealth, Status, and Power Generates Upper-Class Persistence.\u201d\n\nTuesday, March 10\n10:30 a.m.\u201312:00 noon\nISR 1430 BD (426 Thompson St.) \nAbstract: \u201cHow do some families manage to entrench themselves in the upper class for many generations while others do not? Bringing together economic sociology, political sociology, and stratification, I propose a new concept for the study of multigenerational persistence at the top of a stratified society: kinship interlocks. Kinship interlocks are portions of a kinship network that closely combine great wealth, status, and power. Just as board interlocks connect corporate elites through overlapping board memberships, kinship interlocks connect economic, social, and political elites through family ties. Using a mixed-methods analysis, I find that the intimate exchange of resources in kinship interlocks generates upper-class persistence via two primary mechanisms: it protects kin from economic, legal, and social risk, and it propels kin into higher strata. Processes of kin formation and intimate exchange are co-constitutive with systems of gender, sexuality, and race, such that the most durable portions of an upper class are especially heteronormative and racially dominant. The analysis is based on a unique dataset consisting of the full upper class and all economic, political, and social elites in the first 125 years of Dallas history, along with all mutual family ties.\u201d\n\nAn economic and historical sociologist broadly focused on inequality, Shay studies the kinship networks that weave elites together. Her mixed-methods research tracks the capture and circulation of resources through upper-class populations over time, with a particular focus on women, whiteness, and wealth. Formerly, she was a Postdoctoral Scholar in the Stone Program in Wealth Distribution, Inequality, and Social Policy at the Harvard Kennedy School. She received her PhD in Sociology from Princeton University and her BA in Anthropology from Brown University. Learn more.", "occurrence_notes":null, "guid":"145978-21898205@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/145978", "building_id":"1000145", "building_name":"Institute For Social Research", "campus_maps_id":"76", "room":"1430 BD", "location_name":"Institute For Social Research", "has_livestream":0, "cost":"", "tags":["Graduate Students","Inequality","Research","Social Sciences","Sociology"], "website":"https:\/\/inequality.umich.edu\/shay-o-brien\/", "sponsors":[ { "group_name":"Stone Center for Inequality Dynamics (CID)", "group_id":"4866", "website":"" }, { "group_name":"Institute for Social Research", "group_id":"3285", "website":"http:\/\/isr.umich.edu" }, { "group_name":"Survey Research Center", "group_id":"5063", "website":"https:\/\/src.isr.umich.edu\/" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/02\/event_145978_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/02\/event_145978_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/02\/event_145978_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/02\/event_145978_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/02\/event_145978_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2026\/02\/event_145978_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2026\/02\/event_145978_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2026\/02\/event_145978_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2026\/02\/event_145978_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2026\/02\/event_145978_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2026\/02\/event_145978_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/02\/event_145978_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/02\/event_145978_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2026\/02\/event_145978_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2026\/02\/event_145978_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/02\/event_145978_original-1.png" }, "occurrence_count":1, "first_occurrence":21898205 } , "146033-21898297": { "datetime_modified":"20260227T145124", "datetime_start":"20260310T110000", "datetime_end":"20260310T120000", "has_end_time":1, "date_start":"2026-03-10", "date_end":"2026-03-10", "time_start":"11:00:00", "time_end":"12:00:00", "time_zone":"America\/Detroit", "event_title":"Andr\u00e9s Felipe Gonzalez Duran Dissertation Defense", "occurrence_title":"", "combined_title":"Andr\u00e9s Felipe Gonzalez Duran Dissertation Defense: Application of mineral chemistry and petrochronology to unravel the timing and genesis of mineral deposits in the American Cordillera", "event_subtitle":"Application of mineral chemistry and petrochronology to unravel the timing and genesis of mineral deposits in the American Cordillera", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"The American Cordillera hosts some of the world's most significant accumulations of copper, gold, and emeralds. However, the genetic relationship between different mineral deposit styles\u2014specifically the transition between porphyry and iron oxide-apatite (IOA) or iron oxide copper gold (IOCG) systems\u2014and the precise timing of mineralization in complex sedimentary basins remain poorly understood. This dissertation utilizes high-resolution mineral chemistry and in-situ petrochronology to decode the thermal, chemical, and temporal evolution of these world-class mineral systems. The research first investigates the transition between IOA and porphyry-style mineralization at the New Afton Cu-Au mine, British Columbia. By characterizing the trace element chemistry and textures of magnetite (Fe3O4), I demonstrate that magnetite is a dynamic recorder of overprinting hydrothermal events. The identification of widespread coupled dissolution reprecipitation (CDR) textures reveals that primary magmatic signatures are frequently modified by later fluid pulses, challenging traditional classification schemes and providing new textural criteria for exploration vectoring. The focus then shifts to the Eastern Cordillera basin of Colombia to resolve the long-standing debate regarding the timing of emerald mineralization. Through in-situ U-Pb dating of hydrothermal monazite and xenotime, I established the first direct, high-resolution age framework for emerald formation in both the Eastern and Western zones. The results link mineralization to episodic tectonic pulses during the Cretaceous and Paleogene, representing a paradigm shift from single-event genetic models to a more complex, time-transgressive mineralizing system. Finally, the study integrates multi-mineral analysis at the Llahu\u00edn Cu-Au-Mo deposit in Chile. By combining Random Forest Classification (RFC) of magnetite chemistry with titanite and rutile petrochronology, I reconstruct the transition between porphyry and IOCG-style features. The data suggest that these systems can form simultaneously within structural transition zones, governed by the magmatic sulfur budget and localized tectonic shifting. Together, this body of work demonstrates that the integration of micro-textural analysis with advanced mineral chemistry and petrochronology is essential for unraveling the complexity of Cordilleran metallogeny. The findings provide robust tools for mineral exploration and advance our fundamental understanding of how the Earth\u2019s crust concentrates metals and gemstones throughout tectonic cycles.", "occurrence_notes":null, "guid":"146033-21898297@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/146033", "building_id":"1000188", "building_name":"1100 North University Building", "campus_maps_id":"628", "room":"2540", "location_name":"1100 North University Building", "has_livestream":0, "cost":"", "tags":["Earth And Environmental Sciences"], "website":"", "sponsors":[ { "group_name":"Earth and Environmental Sciences", "group_id":"3170", "website":"http:\/\/www.lsa.umich.edu\/earth" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2026\/02\/event_146033_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/02\/event_146033_original-1.jpg" }, "occurrence_count":1, "first_occurrence":21898297 } }