Governors State University Faculty Authors 2011: A List of the Works of Scholarship Displayed at the Faculty Authors Reception Hosted by the University Library on March 29, 2012

Bibliography compiled by the University Library of the publications featured at the annual Faculty Authors Reception at Governors State University

2011 Faculty Authors Reception Bibliography

Bibliography compiled by the University Library of the publications featured at the annual Faculty Authors Reception at Governors State University

Viejos paisajes, nuevas tecnologías: una reconstrucción del paisaje Holoceno con gvSIG y sextante

Con el objetivo de reconstruir el paisaje geomorfológico de finales del cuaternario y comienzos del Holoceno, se ha utilizado gvSIG y sextante para intentar establecer el paisaje a partir de los datos de campoarquelógicos y geomorfológicos recogidos durante una veintena de años en la cuenca media y alta del río Serpis. La evolución cuaternaria es la historia de un vaciado (erosión + denudación) de los valles del curso alto y medio del Serpis, con algunas interrupciones (fases de sedimentación). Testigos de dicha evolución son las terrazas fluviales adscritas por nosotros a diversos periodos del Cuaternario. La combinación de métodos tradicionales y el trabajo con el uso de herramientas SIG se ha mostrado una poderosa herramienta para modelizar el paisaje antiguo. Previo al trabajo de modelización existe un conocimiento geomorfológico yarqueológico territorial de la zona, producto de años de interpretación estereoscópica de foto aérea, trabajo de campo y análisis de laboratorio. La experiencia en la zona de investigación es imprescindible para el control y calibrado de los resultados parciales y de los diferentes MDTs obtenidos con gvSIG. Para la reconstrucción del paisaje geomorfológico se buscan aquellas partes del terreno que cumplen tres requisitos: a) ser bastante llanas (ligera pendiente en el sentido del flujo), b) una determinada altura sobre el cauce – ésta varía en el seno de la cuenca del Serpis, siendo de unos + 20 m en el curso medio y mayor en el alto, y c) próxima al cauce. A partir del MDT se establece la red de drenaje (actual) de orden 2 (Strahler, 1952, 1957). Se elabora la capa de pendientes la de elevación sobre el cauce y un buffer de 125 m entorno a la red de drenaje de orden 2 a 6.In order to reconstruct the geomorphological landscape of the late Quaternary and early Holocene, gvSIG and sextante have been used to try to establish the landscape from geomorphological field data collected over a period of twenty years in the middle and upper basin of the Serpis river. The Quaternary evolution is the history of an emptying (erosion + denudation) of the high and middle valleys of the Serpis, with some interruptions (sedimentation phases). Witnesses of this evolution are the fluvial terraces ascribed by us to diverse periods of the Quaternary. The combination of traditional methods with the use of GIS tools has proven to be a powerful tool for modeling the ancient landscape. Prior to the modeling work, there is an in-depth geomorphological and archeological knowledge of the area, the product of years of stereoscopic aerial photo interpretation, fieldwork and laboratory analysis. The experience in the research area is essential for the control and calibration of the partial results and of the different MDTs obtained with gvSIG. For the reconstruction of the geomorphological landscape, those parts of the terrain that meet three requirements are sought: a) to be quite flat (slight slope in the direction of the flow), b) a certain height over the current channel - this varies in the basin of the Serpis, being about + 20 m in the middle course and higher in the high, and c) areas close to the channel. From the MDT the drainage network (current) of order 2 is established (Strahler, 1952, 1957). The slope layer is constructed on the river bed and a buffer of 125 m around the drainage network of order 2 to 6

East African Rift Tephra Database [EARThD]: a compilation documenting and analyzing explosive volcanism in East Africa

info:eu-repo/semantics/publishe

Compiling geochemistry, geochronology and physical information of EAR explosive events to constrain the spatial and temporal evolution of the rift

info:eu-repo/semantics/publishe

Late Pliocene fossiliferous sedimentary record and the environmental context of early Homo from Afar, Ethiopia

International audienceSedimentary basins in eastern Africa preserve a record of continental rifting and contain important fossil assemblages for interpreting hominin evolution. However, the record of hominin evolution between 3 and 2.5 million years ago (Ma) is poorly documented in surface outcrops, particularly in Afar, Ethiopia. Here we present the discovery of 2.84-2.58 Ma fossil and hominin-bearing sediments in the Ledi-Geraru research area that have produced the earliest record of the genus Homo. Vertebrate fossils record a faunal turnover indicative of more open and probable arid habitats than those reconstructed earlier in this region, in broad agreement with hypotheses addressing the role of environmental forcing in hominin evolution at this time. Geological analyses constrain depositional and structural models of the Afar and date the LD 350-1 Homo mandible to 2.80-2.75 Ma

Reply to Sahle and Gossa: Technology and geochronology at the earliest known Oldowan site at Ledi-Geraru, Ethiopia

International audienceSahle and Gossa (1) identify 2 components of our paper with which they disagree. Their concerns are based on misunderstandings of our paleomagnetic data and the published details of the Bokol Dora 1 (BD 1) artifact assemblage

Early Homo at 2.8 Ma from Ledi-Geraru, Afar, Ethiopia.

Our understanding of the origin of the genus Homo has been hampered by a limited fossil record in eastern Africa between 2.0 and 3.0 million years ago (Ma). Here we report the discovery of a partial hominin mandible with teeth from the Ledi-Geraru research area, Afar Regional State, Ethiopia, that establishes the presence of Homo at 2.80 to 2.75 Ma. This specimen combines primitive traits seen in early Australopithecus with derived morphology observed in later Homo, confirming that dentognathic departures from the australopith pattern occurred early in the Homo lineage. The Ledi-Geraru discovery has implications for hypotheses about the timing and place of origin of the genus Homo