On the formation of magmatic sulphide systems in the lower crust by long‐lived mass transfer through the lithosphere: Insights from the Valmaggia pipe, Ivrea Verbano Zone, Italy
On the formation of magmatic sulphide systems in the lower crust by long‐lived mass transfer through the lithosphere: Insights from the Valmaggia pipe, Ivrea Verbano Zone, Italy
复制标题
关于通过岩石圈的长期传质在下地壳中形成岩浆硫化物系统:来自意大利伊夫雷亚韦尔巴诺带瓦尔马贾管道的见解
DOI:
10.1111/ter.12499
复制
发表时间:
2020
期刊:
影响因子:
2.4
通讯作者:
Nanzad, Bolorchimeg
中科院分区:
文献类型:
--
作者:
Locmelis, Marek;Moroni, Marilena;Denyszyn, Steven W.;Webb, Laura E.;Fiorentini, Marco L.;Sessa, Gianluca;Caruso, Stefano;Mathur, Ryan;Nanzad, Bolorchimeg
The lower crustal domain of the Ivrea‐Verbano Zone (NW Italy) hosts five ~300‐m‐wide pipe‐like ultramafic intrusions that are metasomatized and exhibit Ni‐Cu‐PGE sulphide mineralization. To better constrain the role of metasomatism in the ore genesis, we studied the best‐preserved pipe at Valmaggia which was emplaced 249 Myrs ago. Phlogopite40Ar/39Ar analyses show that the pipe was infiltrated by metasomatic fluids derived from the subcontinental lithospheric mantle (SCLM) in two pulses at ~208 Ma and ~189 Ma which introduced sulphides into the pipe. Consequently, the pipe repeatedly acted as a preferred path for mass transfer from the SCLM into the lower crust over >60 Myrs (i.e., emplacement to second metasomatic pulse). Uplifted block margins, such as the Ivrea‐Verbano Zone, are potentially important exploration targets for magmatic sulphides. We argue that exploration strategies should focus on structures such as pipes that can focus metasomatic agents during ascent through the lithosphere.
登录
查看更多内容
DOI:
--
发表时间:
1983
期刊:
影响因子:
--
作者:
A. Ferrario;G. Garuti;A. Rossi;G. Sighinolfi
通讯作者:
G. Sighinolfi
影响因子:
3.5
作者:
Thomas B. Grant;D. Harlov
通讯作者:
D. Harlov
DOI:
--
发表时间:
1994
期刊:
影响因子:
--
作者:
S. Sinigoi;J. E. Quick;D. Clemens;A. Mayer;G. Demarchi;M. Mazzucchelli;L. Negrini;G. Rivalenti
通讯作者:
G. Rivalenti
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
K. Malitch;E. Belousova;W. Griffin;I. Badanina;V. Knauf;S. O’Reilly;N. Pearson
通讯作者:
N. Pearson
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
Marco L. Fiorentinii;G. Grieco;Alfredo Ferrarioi;A. Tunesi
通讯作者:
A. Tunesi