Zona di Bosco
Representation and status
- Color CMYK
- N/A
- Color RGB
- R: 241 G: 239 B: 237
- Rank
- tectonic zone
- Validity
- Unit is in Use
- Status
- valid
- Status discussion
Nomenclature
- Deutsch
- Bosco-Zone
- Français
- Zone de Bosco
- Italiano
- Zona di Bosco
- English
- Bosco Zone
- Origin of the Name
-
Walser Gemeinde Bosco / Gurin (TI)
- Historical Variants
-
Boscoserie (Grütter 1929), Bosco-Serie (Wieland 1966), Bosco-Gurin unit (Merle & Le Gal 1988), Bosco unit (Steck et al. 2013, Steck et al. 2015), Zona tettonica di Bosco = Zona di Bosco (Della Torre & Maggini 2015), Bosco Zone (Gouffon et al. 2024)
Description
- Description
-
Zona con rocce di basamento di origine sedimentaria (micascisti) intrudata da masse e filoni di ortogneiss, circondata della zona del Bombogno (risp. delle falde di Antigorio e del Monte Leone).
Age
- Age at top
-
- Palaeogene
- Note about top
-
sicher bis Jura, ev. noch bis Paläogen?
- Age at base
-
- Triassic
Geography
- Geographical extent
- Lepontin: Alpe Bosa, Bosco, Wandfluhhorn, Valle dell'Isorno [kommt nur auf GA25-Blatt 145_Bosco/Gurin vor].
References
- Definition
-
(1929) :
Petrographische und geologische Untersuchungen in der Region von Bosco (Valle Maggia), Tessin. Verh. natf. Ges. Basel 40/1, 78–152
S.113: Zur Boscoserie fassen wir die bunte Reihe von Gneisen, Glimmerschiefern, Hornblendegesteinen und metamorphen Peridotiten zusammen, welche in der westlichen Hälfte des auf der geologischen Kartenskizze dargestellten Gebietes in Belgeitung von mesozoischen Schiefern auftreten und die von den Gesteinen der Orsaliagneisserie, bzw. deren Randzone, der Bombognoserie, umrandet erscheinen.
- Definition
-
(2024) :
Tectonic Map of Switzerland 1:500000, Explanatory notes. Federal Office of Topography swisstopo, Wabern
p.49: The Bosco, Bombogno, Isorno and Orselina-Bellinzona zones include various rocks (micaschists, para- and orthogneisses, calcschists, marbles, amphibolites and few ultramafics), probably Paleozoic and Mesozoic in age, which can locally be interpreted as a mélange. The Bosco and the Bombogno zones appear between the Antigorio and Monte Leone nappes in the large polyphase Alpe Bosa-Wandfluhhorn Fold located between the Maggia and Antigorio valleys. In the southern part of the eastern (upper) limb of this fold, these two units have not been distinguished and are grouped together in the Isorno Zone.
- Important Publications