Search for Articles:
Title / Keyword
Author / Affiliation / Email
Journal
Article Type
 
 
Advanced Search
 
Section
Special Issue
Volume
Issue
Number
Page
 
3.9
2.5
Journals
Minerals
Special Issues
Genesis of Calc-Alkaline Granitic Rocks: Evidence from Petrology and Geochemistry
share announcement

Genesis of Calc-Alkaline Granitic Rocks: Evidence from Petrology and Geochemistry

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Geochemistry and Geochronology".

Deadline for manuscript submissions: closed (29 February 2024) | Viewed by 4109

Special Issue Editors

Dr. Shuang-Qing Li

E-Mail Website
Guest Editor
Institut für Geowissenschaften, Universität Heidelberg, 69120 Heidelberg, Germany
Interests: U-Pb dating; diffusion chronometry; radiogenic and non-traditional stable isotope; volcanism; calc-alkaline granitic rocks; magma origin
Dr. Long Chen

E-Mail Website
Guest Editor
Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Lab of Submarine Geosciences and Prospecting Techniques, Ministry of Education (MOE) and College of Marine Geosciences, Ocean University of China, Qingdao 266100, China
Interests: andesite petrogenesis; subduction zone magmatism; collision zone magmatism; crustal recycling; continental crust growth and reworking

Special Issue Information

Dear Colleagues,

The planned Special Issue aims to attract research contributions on the topic of calc-alkaline granitic rocks, with special emphasis on their post-collisional origin, including a wide variety of igneous rocks in terms of their origin and genesis. Magmatism is often associated with a change in tectonic regime from compression to extension, which makes it yet more complex. Despite numerous research articles dealing with such magmatism, there is still much space for debate. Topics that are often a subject of debate are:

  • The mantle and/or crustal origin of magma;
  • The influence (if any) of syn-emplacement and syn-cooling tectonic processes on the final geochemical signature of the igneous suit;
  • Magma emplacement during within-plate settings, and the geodynamic controls of magmatism in extensional episodes;
  • The origin of accompanying mafic magmas, and the method of their mixing/mingling;
  • The age of the magma emplacement;
  • Thermobarometry, etc.

Contributions that include perspectives of critical raw material enrichment in post-collisional calc-alkaline granitic rocks are also welcome, as well as those assessing crustal thickness at the time of magmatism using geochemical and isotopic data.

We invite you to share experiences, field research findings, and indicators obtained with conventional and modern geochemical analytical methods, with the aim to strengthen our knowledge on the origin and genesis of post-collisional calc-alkaline granitic rocks.

Dr. Shuang-Qing Li
Dr. Long Chen
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Minerals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • calc-alkaline granitic rocks
  • magma origin
  • genesis of post-collisional calc-alkaline granitic rocks
  • petrography
  • petrology
  • geochemistry
  • syn-emplacement tectogenesis
  • syn-cooling tectogenesis
  • mineralization
  • critical raw materials
  • geochronology

Published Papers (2 papers)

Download All Papers
Order results
Result details
Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:

Research

30 pages, 8490 KiB  
Article
Two Distinct Fractional Crystallization Mechanisms of A-Type Granites in the Nanling Range, South China: A Case Study of the Jiuyishan Complex Massif and Xianghualing Intrusive Stocks
by Wenzhou Xiao, Chaoyun Liu, Kaixuan Tan, Xianzhe Duan, Kaituo Shi, Qinglin Sui, Peng Feng, Mabrouk Sami, Mohamed S. Ahmed and Feng Zi
Minerals 2023, 13(5), 605; https://doi.org/10.3390/min13050605 - 27 Apr 2023
Cited by 4 | Viewed by 1629
Abstract
The petrogenesis of A-type granites with different occurrences in the Nanling Range remains unclear. In this study, a case study of the Jiuyishan complex massif and Xianghualing intrusive stocks was conducted to determine this problem. The Jiuyishan complex massif is composed of four [...] Read more.
The petrogenesis of A-type granites with different occurrences in the Nanling Range remains unclear. In this study, a case study of the Jiuyishan complex massif and Xianghualing intrusive stocks was conducted to determine this problem. The Jiuyishan complex massif is composed of four units (Jinjiling, Pangxiemu, Shaziling and Xishan). These four units have similar zircon U-Pb ages of approximately 153 Ma, with high Zr + Nb + Ce + Y contents (>350 ppm), high 10,000 Ga/Al ratios (>2.6), and a high crystallization temperature, indicating A-type affinities. They show a gradual change in lithology and geochemistry, implying a fractional crystallization process. These units also have similar εNd(t) values (−8.2 to −5.8) and zircon εHf(t) values (−7.5 to −2.2) except for the Shaziling MMEs (mafic microgranular enclaves) (−14.2 to 4.8), demonstrating their lower crustal source. However, the Shaziling unit may have contributed mantle-derived magma based on the geochemical data of its hosted MMEs. In comparison, the two Xianghualing intrusive stocks have similar geochemical features but exhibit highly evolved features (high Rb, U, Y, Ta and Nb contents and low Eu, Ba, Sr, P, Ti, Ca, Mg and Fe contents, with V-shaped REE distribution patterns). They have different zircon U-Pb ages of approximately 160 Ma and 155 Ma. The two stocks also have similar whole-rock εNd(t) values (−6.5 to −5.7) and zircon εHf(t) values (−7.6 to −2.7) and equally illustrate a lower crustal source region. Combining with their vertical zonation, they may have experienced remarkable fractional crystallization with possible assimilation processes. We propose that the Jiuyishan complex and Xianghualing stocks have two distinct fractional crystallization mechanisms during their formation. The Jiuyishan complex was formed by in situ crystal mush fractionation, while the Xianghualing stocks were formed by flowage differentiation during magma ascent or gravitational settling during magma solidification after emplacement. However, more than one mechanism affected the fractional crystallization processes of these granitic rocks. Full article
(This article belongs to the Special Issue Genesis of Calc-Alkaline Granitic Rocks: Evidence from Petrology and Geochemistry)
►▼ Show Figures

Figure 1

21 pages, 5294 KiB  
Article
Petrogenesis and Tectonic Implications of the Cryogenian I-Type Granodiorites from Gabgaba Terrane (NE Sudan)
by Mabrouk Sami, Munir M. A. Adam, Xinbiao Lv, El Saeed R. Lasheen, Antoaneta Ene, Hesham M. H. Zakaly, Saad S. Alarifi, Nasser M. Mahdy, Abdel Rahman A. Abdel Rahman, Adil Saeed, Esam S. Farahat, Douaa Fathy and Shehata Ali
Minerals 2023, 13(3), 331; https://doi.org/10.3390/min13030331 - 27 Feb 2023
Cited by 12 | Viewed by 1983
Abstract
The widely distributed granitic intrusions in the Nubian Shield can provide comprehensive data for understanding its crustal evolution. We present new bulk-rock geochemistry and isotopic (zircon U-Pb and Lu-Hf) data from the Haweit granodiorites in the Gabgaba Terrane (NE Sudan). The dated zircons [...] Read more.
The widely distributed granitic intrusions in the Nubian Shield can provide comprehensive data for understanding its crustal evolution. We present new bulk-rock geochemistry and isotopic (zircon U-Pb and Lu-Hf) data from the Haweit granodiorites in the Gabgaba Terrane (NE Sudan). The dated zircons presented a 206Pb/238U Concordia age of 718.5 ± 2.2 Ma, indicating that they crystallized during the Cryogenian. The granodiorites contain both biotite and amphibole as the main mafic constituents. The samples exhibit metaluminous (A/CNK = 0.84–0.94) and calc-alkaline signatures. Their mineralogical composition and remarkable low P2O5, Zr, Ce, and Nb concentrations confirm that they belong to I-type granites. They exhibit subduction-related magma geochemical characters such as enrichment in LILEs and LREEs and depletion in HFSEs and HREEs, with a low (La/Yb)N ratio (3.0–5.9) and apparent negative Nb anomaly. The positive Hf(t) values (+7.34 to +11.21) and young crustal model age (TDMC = 734–985 Ma) indicates a juvenile composition of the granodiorites. The data suggest that the Haweit granodiorites may have formed from partially melting a juvenile low-K mafic source. During subduction, the ascending asthenosphere melts might heat and partially melt the pre-existing lower crust mafic materials to generate the Haweit granodiorites in the middle segment of the Nubian Shield. Full article
(This article belongs to the Special Issue Genesis of Calc-Alkaline Granitic Rocks: Evidence from Petrology and Geochemistry)
►▼ Show Figures

Figure 1

Show export options expand_more Show export options expand_less
Select all
Export citation of selected articles as:
 
Displaying articles 1-2
Back to TopTop