2024-05-13 07:12 |
|
2024-02-21 05:23 |
|
2024-02-21 05:23 |
|
2024-02-21 05:23 |
|
2024-02-21 05:23 |
27 p, 5.8 MB |
Petrogenesis of the late Miocene Chenar volcanism in the southeast Urumieh-Dokhtar magmatic belt, Kerman, Iran : evidence from geochemical, U-Pb geochronologic, and Hf isotopic constraints: Petrogenesis and geochronologic of the Chenar volcanism (Iran)
/
Salehi Nejard, Hamideh (Shahid Bahonar University of Kerman. Department of Geology) ;
Shahosinie, Elham (Islamic Azad University. North Tehran Branc. Department of Geology) ;
Nazarinia, Asma (University of Hormozgan. Department of Geology) ;
Lentz, David R. (University of New Brunswick. Department of Earth Sciences)
The Chenar volcanic cone intruded the southeastern part of the Dehaj-Sarduiyeh volcano-sedimentary belt, in the southeast Urumieh-Dokhtar magmatic arc in Iran. The adakitic rocks, with porphyritic texture, mainly consist of rhyodacites and dacites,commonly comprised of phenocrysts of plagioclase, hornblende and biotite, with rare K-feldspar in a groundmass composed of plagioclase, K-feldspar and quartz. [...]
2024 - 10.1344/GeologicaActa2024.22.1
Geologica acta, Vol. 22 (2024) , p. 1-23, I-IV (Articles)
|
|
2024-02-21 05:23 |
|
2024-02-21 05:23 |
72 p, 12.2 MB |
Paleocene larger foraminifera from the Pyrenean basin with a recalibration of the Paleocene Shallow Benthic Zones
/
Serra-Kiel, Josep (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà) ;
Vicedo, Vicent (Museu de Ciències Naturals de Barcelona. Departament de Paleontologia) ;
Baceta Caballero, Juan Ignacio (Universidad del País Vasco. Departamento de Estratigrafía y Paleontología) ;
Bernaola Bilbao, Gilen (Universidad del País Vasco. Departamento de Ingeniería Minera y Metalúrgica y Ciencia de los Materiales) ;
Robador Moreno, Alejandro (Consejo Superior de Investigaciones Científicas. Instituto Geológico y Minero de España)
A taxonomic study of the Paleocene larger foraminifera from the Pyrenean basin has led to the description of sixty taxa including two new species: Alveolina korresensis and Valvulineria bacetai. In this work, we present a chronostratigraphic recalibration of the Paleocene Shallow Benthic Zones SBZ 1 to SBZ 4 based on correlation with calcareous nannofossil and planktic foraminifera biozones, all integrated within the stratigraphic framework of Paleocene platform to basin depositional sequences established for the whole Pyrenean domain. [...]
2020
Geologica acta, Vol. 18 Núm. 2 (2020) , p. 1-III. (Articles)
|
|
2024-02-21 05:23 |
39 p, 8.9 MB |
Systematics of Lutetian larger foraminifera and magneto-biostratigraphy from the South Pyrenean Basin (Sierras Exteriores, Spain)
/
Silva-Casal, Roi (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà) ;
Serra-Kiel, Josep (Museu de Ciències Naturals de Barcelona. Departament de Paleontologia) ;
Rodríguez-Pintó, Adriana (Freelance Geologist consultant) ;
Pueyo, Emilio (Universidad de Zaragoza) ;
Aurell, Marcos (Universidad de Zaragoza. Departamento de Ciencias de la Tierra) ;
Payros, Aitor (Universidad del País Vasco. Departamento de Estratigrafía y Paleontología)
A systematic description of the Eocene larger foraminifera recorded in the South Pyrenean Basin (Sierras Exteriores) is presented herein. The large dataset provided in this work includes Nummulites and Alveolina species, along with a variety of other porcellaneous and hyaline taxa with lesser biostratigraphic relevance. [...]
2020
Geologica acta, Vol. 18 Núm. 2 (2020) , p. 1-XVII. (Articles)
2 documents
|
|
2024-02-21 05:22 |
30 p, 7.5 MB |
Cadomian metabasites of the Eastern Pyrenees revisited
/
Pujol-Solà, Núria (Universitat de Barcelona. Departament de Mineralogia, Petrologia i Geologia Aplicada) ;
Casas Tuset, Josep Maria (Universitat de Barcelona. Departament de Dinàmica de la Terra i de l'Oceà) ;
Proenza, Joaquín A. (Universitat de Barcelona. Departament de Mineralogia, Petrologia i Geologia Aplicada) ;
Blanco-Quintero, Idael Francisco (Universitat d'Alacant. Departament de Ciències de la Terra i del Medi Ambient) ;
Druguet, Elena (Universitat Autònoma de Barcelona. Departament de Geologia) ;
Liesa Torre-Marín, Montserrat (Universitat de Barcelona. Departament de Mineralogia, Petrologia i Geologia Aplicada) ;
Román-Alpiste, Manuel J. (Consejo Superior de Investigaciones Científicas. Instituto Andaluz de Ciencias de la Tierra) ;
Álvaro, Jose Javier (Consejo Superior de Investigaciones Científicas. Instituto de Geociencias)
This study presents a new geochemical, petrological, and geochronological U-Pb dataset from Ediacaran metabasites and associated rocks of the Canigó and Cap de Creus massifs, Eastern Pyrenees. Metabasites are composed of calcic amphibole + plagioclase + chlorite + epidote ± quartz plus titanite + apatite + ilmenite ± biotite ± rutile as accessory phases and show relict igneous textures. [...]
2023
Geologica acta, Vol. 20 Núm. 2 (2022) , p. 1-26, I-IV (The panafrican and cadomian orogenies in North Africa and western Europe)
|
|
2024-01-23 06:01 |
|
|
|