Cacciola-Granit

Rappresentazione e statuto

Index

gamma-C

Colore CMYK

(0%,41%,59%,10%)

Colore RGB

R: 230 G: 135 B: 95

Rango

Formazione litostratigrafica

Uso

Unità in uso.

Status

termine informale

Nomenclatura

Deutsch

Cacciola-Granit

Français

Granite de la Cacciola

Italiano

Granito della Cacciola

English

Cacciola Granite

Origine del nome

Alp Cacciola = Gatschola (UR), südlich Realp

Varianti storiche

Granit von Oberkäsern (von Fritsch 1873), Granit der Caciola-Alpe = Caciola-Granit (Grubenmann 1890 S.204), Cacciola-Granit (Rutsch et al. 1966), Cacciola-Tremolagranit, Cacciola granite (Mercolli et al. 1994), Cacciola-Granit (Labhart & Renner 2012), Cacciola Granite (Berger et al. 2017)

Gerarchia e successione

Unità di rango superiore

• Spät- bis postvariszische Intrusiva

Età

Geomorfologia

• Primo Permiano

Età alla base

• Primo Permiano

Metodo di datazione

292 +/-11 Ma (Oberli et al. 1981)

Geografia

Estensione geografica

Kleines Granitvorkommen des nördlichen Gotthardmassivs.

Paleogeografia e tettonica

Termini generici

• Gotthard

Tipo di origine

• plutonica

Metamorfismo

monociclico

Referenze

Definizione

Grubenmann U. (1890) : Zur Kenntnis der Gotthard-Granite. Mitteilungen der Thurgauischen Naturforschenden Gesellschaft 9, 204-216

R. Müller & E. Niggli in: Rutsch et al. 1966: CACCIOLA-GRANIT (= Caciola-Granit = Granit der Caciola-Alpe = Granit von Oberkäsern) (? Jungpaläozoikum ; Gotthardmassiv)

U. Grubenmann (1890) in: Zur Kenntnis der Gotthard-Granite. Verh. thurgauische natf. Ges., 9: 204-216.

Kleines Granitvorkommen des nördlichen Gotthardmassivs, 3 km südlich Realp, bei der Alp Cacciola (= Gatschola der LK 255, 682.000/158.550). Zuerst von v. Fritsch (1873) als Granit von Oberkäsern beschrieben; von U. Grubenmann (1890: 204) stammt die Bezeichnung Cacciola-Granit. Der Cacciola-Granit geht nach Nordosten allmählich in den flasrig-gneisigen Gamsboden-Granitgneis über. Biotitgranit mit hypidiomorph-körniger, leicht kataklastischer Struktur. Nach R. Sonder (1921: 337) im Spätpaläozoikum intrudiert.

Literatur: K. v. Fritsch (1873): 47; A. Baltzer (1888: 99; U. Grubenmann (1890: 210); R. Sonder (1921: 337); E. Ambühl (1929: 428).

Revisione

Berger Alfons, Mercolli Ivan, Herwegh Marco, Gnos Edwin (2017) : Geological Map of the Aar Massif, Tavetsch and Gotthard Nappes. Geological Special Map 1:100'000, Explanatory Notes 129

p.73: At map scale, the Rotondo Granite, representing the largest granitic body of this group with an exposed surface of ~25 km2, has a pronounced, rounded shape, with sharp discordant contacts to the surrounding gneisses of the polycyclic metamorphic basement. Its microstructure is massive and essentially undeformed; locally garnet occurs. Due to this, it was suggested that the intrusion could be of Alpine age (HAFNER 1958). The other small granite bodies intrude along the boundaries of the two larger and slightly older Fibbia Granite and Gamsboden Granite. The close spatial link between the granites of the Pesciora Group and those of the Val Lavaz Group underline an almost continuous intrusive activity as suggested by the age relationship.
SERGEEV et al.(1995) obtained an U/Pb age on zircon of 294± 1,1 Ma for the Rotondo Granite and the Tremola Granite (Fig. 4). SERGEEV & STEIGER (1995) suggested an age interval of 5,5 Ma for the intrusion of the Rotondo, Winterhorn, Cacciola, Prosa and Tremola Granites with an average age of 294,5+3,5/–2 Ma. OBERLI et al.(1981) obtained an age of 292±11 Ma for the Cacciola Granite, and BOSSART et al.(1986) an age of 293+4/–5 Ma for the Sädelhorn Diorite, both in agreement with the ages of the granitic members of the group. This time interval corresponds well with Early Permian (Sakmarian, 295– 290 Ma).