Nuestros Aragosaureros Juan Rofes (UPV-EHU) y Gloria Cuenca Bescós
(Universidad de Zaragoza) han participado en una comunicación liderada
por Amaia Ordiales (UPV-EHU) que acaba de presentarse en el 1st Young
Natural History Scientists’ Meeting (12/13 de febrero), organizado por
el Muséum National d’Histoire Naturelle de París. Se trata de una
comunicación en formato póster titulada “Small mammals as tools to
characterize archaeological contexts in the Chalcolithic of El Portalón
site (Atapuerca, Burgos, Spain)”, en la que también han participado los
investigadores Eneko Iriarte (UBU), Verónica Mardones (UBU/CENIEH), José
Miguel Carretero (UBU), Juan Luis Arsuaga (ISCIII/UCM) y Naroa
García-Ibaibarriaga (UPV-EHU). Esta última fue la encargada de defender
el póster en París y aparece en la foto de arriba.
El Portalón
es la entrada actual al sistema kárstico de Cueva Mayor, en la Sierra
de Atapuerca. Esta última, internacionalmente famosa por sus ricos
yacimientos del Pleistoceno Temprano y Medio con restos humanos. Además,
el Portalón es un importante yacimiento arqueológico con una larga
secuencia estratigráfica que cubre los últimos 30,000 años (Pleistoceno
final-Holoceno). Los depósitos Holocenos, con evidencia de actividad
humana intensa, se dividen en nueve unidades crono-culturales, abarcando
los períodos Mesolítico, Neolítico, Calcolítico, Edad del Bronce, Edad
del Hierro, época Romana y Medieval.
En esta comunicación
presentamos por primera vez la asociación de pequeños mamíferos de tres
diferentes contextos arqueológicos del Calcolítico de El Portalón: el
suelo preparado, el suelo de actividad y los Fumiers. El listado
completo de micromamíferos de El Portalón incluye cuatro insectívoros (Sorex minutus, S. gr. araneus-coronatus, Crocidura russula y Talpa sp.), nueve roedores (Apodemus
sylvaticus, Microtus [Terricola] lusitanicus, M. [T.] duodecimcostatus,
M. [Microtus] arvalis, M. [M.] agrestis, Chionomys nivalis, Arvicola
sapidus, Sciurus vulgaris, y Eliomys quercinus), un lepórido indeterminado y dos quirópteros (Miniopterus cf. shreibersi y Myotis gr. myotis/blythii).
El
sedimento del suelo preparado, de origen alóctono, contiene también
Pliomys lenki, pero esta especie seguramente corresponde a una
contaminación del Pleistoceno. Tradicionalmente, los pequeños mamíferos
se han usado en estudios biocronológicos y en reconstrucciones
paleoambientales. Aquí, ligeras pero significativas diferencias
cuantitativas y cualitativas entre los contextos —en términos de los
micromamíferos que contienen— se usan como herramientas efectivas para
caracterizarlos tanto cronológica como tafonómicamente.
[Descarga el PDF relacionado]
martes, febrero 25, 2014
lunes, febrero 24, 2014
Ofertas de trabajo
Por medio de la Sociedad Española de Paleontología nos han llegado varias ofertas de trabajo, os las adjuntamos con el enlace.
Scientific Director (http://www.geocurator.org/news/jobs.htm#360)
Our Dynamic Earth, Edinburgh
Deadline: 28th February 2014
Physical Science Technician (Paleontology) (http://www.geocurator.org/news/jobs.htm#361)
Hagerman Fossil Beds National Monument, Idaho
Deadline: 28th February 2014
Director / Curator (http://www.geocurator.org/news/jobs.htm#362)
Fundy Geological Museum, Nova Scotia
Deadline: 9th March 2014
Summer Paleontology Field Coordinator (http://www.geocurator.org/news/jobs.htm#363)
Dinosaur Journey in Fruita, Museum of Western Colorado
Deadline: 15th March 2014.
Además una beca para Canada.
A two-year MSc studentship is available for the NSERC-funded program: \"Pliocene - Pleistocene dinoflagellate cysts, geochemistry, and paleoceanography of the North Atlantic region\" in the Department of Earth Sciences, Brock University, St. Catharines, Ontario, Canada. Application deadline: April 4, 2014 (but see below).
Description of MSc project: The North Atlantic Current (NAC) and thermohaline circulation are major drivers of global climate change, transferring heat and moisture to high northern latitudes. Moisture is necessary for ice sheets to accumulate, which increases albedo and causes global temperatures to drop. Hence, the Northern Hemisphere, through its capacity to grow extensive continental ice sheets, has been a major amplifier of global climate change at least since the Late Pliocene. The changing dynamics of the NAC and polar front are accordingly critical to our understanding of past and future climates.
The Pliocene - Pleistocene transition, including the intensification of Northern Hemisphere glaciation at 2.74 Ma and the base of the Quaternary at 2.58 Ma, represents a profound shift to our present climate state. The project will focus on one of several available sediment cores in the North Atlantic that captures this transition. A novel combination of proxies (dinoflagellate cysts, other palynomorphs, ice-rafted debris, and foraminiferal Mg/Ca ratios and oxygen and carbon isotopes) will be used to reconstruct sea-surface temperature, salinity, ice melting, NAC strength, and position of the polar front through time.
Applicants should have a strong interest in paleoceanography, paleoclimatology, or paleoecology, and be comfortable using a microscope. Previous exposure to palynology would be an asset but full training will be given in all areas of the project.
The project, under the supervision of Prof. Martin J. Head, will include collaboration with Dr Jeroen Groeneveld (Bremen University, Germany), Dr Stijn De Schepper (Bergen University, Norway), and Dr Jan Hennissen (British Geological Survey). It is scheduled to begin September 2014, but could be delayed to January, 2015.
How to apply: The on-line application for admission is at:
https://discover.brocku.ca/Buffers/MSCERSC.ezc
The application deadline is April 4, 2014 or until filled. Please check well in advance that you meet English language requirements.For any questions relating to this project, please contact Prof. Martin J. Head (mjhead@brocku.ca). You are encouraged to contact Prof. Head prior to applying.
Scientific Director (http://www.geocurator.org/news/jobs.htm#360)
Our Dynamic Earth, Edinburgh
Deadline: 28th February 2014
Physical Science Technician (Paleontology) (http://www.geocurator.org/news/jobs.htm#361)
Hagerman Fossil Beds National Monument, Idaho
Deadline: 28th February 2014
Director / Curator (http://www.geocurator.org/news/jobs.htm#362)
Fundy Geological Museum, Nova Scotia
Deadline: 9th March 2014
Summer Paleontology Field Coordinator (http://www.geocurator.org/news/jobs.htm#363)
Dinosaur Journey in Fruita, Museum of Western Colorado
Deadline: 15th March 2014.
Además una beca para Canada.
A two-year MSc studentship is available for the NSERC-funded program: \"Pliocene - Pleistocene dinoflagellate cysts, geochemistry, and paleoceanography of the North Atlantic region\" in the Department of Earth Sciences, Brock University, St. Catharines, Ontario, Canada. Application deadline: April 4, 2014 (but see below).
Description of MSc project: The North Atlantic Current (NAC) and thermohaline circulation are major drivers of global climate change, transferring heat and moisture to high northern latitudes. Moisture is necessary for ice sheets to accumulate, which increases albedo and causes global temperatures to drop. Hence, the Northern Hemisphere, through its capacity to grow extensive continental ice sheets, has been a major amplifier of global climate change at least since the Late Pliocene. The changing dynamics of the NAC and polar front are accordingly critical to our understanding of past and future climates.
The Pliocene - Pleistocene transition, including the intensification of Northern Hemisphere glaciation at 2.74 Ma and the base of the Quaternary at 2.58 Ma, represents a profound shift to our present climate state. The project will focus on one of several available sediment cores in the North Atlantic that captures this transition. A novel combination of proxies (dinoflagellate cysts, other palynomorphs, ice-rafted debris, and foraminiferal Mg/Ca ratios and oxygen and carbon isotopes) will be used to reconstruct sea-surface temperature, salinity, ice melting, NAC strength, and position of the polar front through time.
Applicants should have a strong interest in paleoceanography, paleoclimatology, or paleoecology, and be comfortable using a microscope. Previous exposure to palynology would be an asset but full training will be given in all areas of the project.
The project, under the supervision of Prof. Martin J. Head, will include collaboration with Dr Jeroen Groeneveld (Bremen University, Germany), Dr Stijn De Schepper (Bergen University, Norway), and Dr Jan Hennissen (British Geological Survey). It is scheduled to begin September 2014, but could be delayed to January, 2015.
How to apply: The on-line application for admission is at:
https://discover.brocku.ca/Buffers/MSCERSC.ezc
The application deadline is April 4, 2014 or until filled. Please check well in advance that you meet English language requirements.For any questions relating to this project, please contact Prof. Martin J. Head (mjhead@brocku.ca). You are encouraged to contact Prof. Head prior to applying.
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