Dear colleagues
Good morning. The IUGS TGIR (Task Group on Igneous Rocks) is planning to publish a book (glossary) on the classification of igneous rocks in 2025. Should the IUGS TGIR adopt the Lamprophyre clan or facies concept or both regarding the classification of lamprophyres, lamproites and kimberlites? A new 2024 article entitled "Some notes on the IUGS classification of lamprophyric rocks" concludes that both concepts are correct but they represent different perspectives of the matter. See PDF in Researchgate:Article Some notes on the IUGS classification of lamprophyric rocks
The clan (as updated by Kamvisis & Phani 2022) focuses on the interrelations between these rocks while the facies concept focuses on their formation under volatile-rich conditions (as proposed by Mitchell 1994). The new article suggests that both concepts should be adopted by the IUGS TGIR. What do you think? Comments are welcome.
Best regards
Ioannis Kamvisis
dear Ioannis
The classification of lamprophyres, lamproites, and kimberlites has been a topic of ongoing discussion within the International Union of Geological Sciences (IUGS). Here are some key points from recent proposals and discussions:
These proposals aim to create a more accurate and comprehensive classification system that can be widely adopted by geologists.
Is there a specific aspect of this classification that interests you the most?
1: Integrating Ultramafic Lamprophyres into the IUGS Classification of Igneous Rocks 2: Classification of Lamprophyres, Lamproites, Kimberlites
DEAR MASSOUD
GOOD MORNING AND THANK YOU FOR YOUR DETAILED REPLY. THE ASPECT THAT INTERESTS ME THE MORE IS THE CLASSIFICATION OF LAMPROPHYRES, LAMPROITES AND KIMBERLITES. I, AMONG OTHER GEOLOGISTS (E.G. DANIEL MULLER), BELIEVE THAT THESE ROCKS ARE INTERRELATED. SEE OUR 2022 PAPER ENTITLED: The "Lamprophyre Clan" Revisited AND OUR 2024 PAPER ENTITLED: Some notes on the IUGS classification of lamprophyric rocks. DID YOU KNOW THAT THERE ARE SEVERAL LAMPROPHYRE (CALC-ALKALINE AND ALKALINE) OCCURRENCES ACROSS IRAN?
BEST REGARDS
IOANNIS
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