331 ± 9 Ma emplacement age of the Soultz monzogranite (Rhine Graben basement) by U/Pb ion-probe zircon dating of samples from 5 km depth

Pavel Alexandrov and Jean-Jacques Royer and Étienne Deloule. ( 2001 )
in: Comptes Rendus de l'Acad{\'e}mie des Sciences - Series IIA - Earth and Planetary Science, 332:12 (747-754)

Abstract

Drilling at Soultz-sous-Forêts, France, conducted as part of the European ‘Hot Dry Rock’ Project, penetrated the Rhine Graben basement down to 5 090 m and revealed a porphyritic monzogranite. Chemical composition and REE patterns of three samples at 5 km depth indicate homogeneous composition with a slight vertical differentiation, suggesting stable P–T conditions after the magma emplacement. U/Pb ion-probe zircon dating provides an emplacement age at 331±9 Ma. This age is in agreement with those of the other intrusive granitoids in this part of the Variscan segment, indicating a period of intensive magmatic activity around 330 Ma.

Download / Links

BibTeX Reference

@article{alexandrov:hal-04053605,
 abstract = {Drilling at Soultz-sous-Forêts, France, conducted as part of the European ‘Hot Dry Rock’ Project, penetrated the Rhine Graben basement down to 5 090 m and revealed a porphyritic monzogranite. Chemical composition and REE patterns of three samples at 5 km depth indicate homogeneous composition with a slight vertical differentiation, suggesting stable P–T conditions after the magma emplacement. U/Pb ion-probe zircon dating provides an emplacement age at 331±9 Ma. This age is in agreement with those of the other intrusive granitoids in this part of the Variscan segment, indicating a period of intensive magmatic activity around 330 Ma.},
 author = {Alexandrov, Pavel and Royer, Jean-Jacques and Deloule, {\'E}tienne},
 doi = {10.1016/S1251-8050(01)01594-4},
 hal_id = {hal-04053605},
 hal_version = {v1},
 journal = {{Comptes Rendus de l'Acad{\'e}mie des Sciences - Series IIA - Earth and Planetary Science}},
 keywords = {U/Pb geochronology ; ion-probe ; zircons ; Visean ; Soultz-sous-For{\^e}ts ; Rhine Graben ; France ; g{\'e}ochronologie U/Pb ; microsonde ionique ; zircons ; Vis{\'e}en ; Soultz-sous-For{\^e}ts ; graben du Rhin ; France},
 month = {June},
 number = {12},
 pages = {747-754},
 publisher = {{Elsevier}},
 title = {{331 $\pm$ 9~Ma emplacement age of the Soultz monzogranite (Rhine Graben basement) by U/Pb ion-probe zircon dating of samples from 5~km depth}},
 url = {https://hal.univ-lorraine.fr/hal-04053605},
 volume = {332},
 year = {2001}
}