A type of basalt that is formed primarily and is often the first type encountered in geological studies.

प्राथमिक बेसाल्ट

English Usage: "The primary basalt layer is crucial for understanding the geological history of the region."

Hindi Usage: "प्राथमिक बेसाल्ट परत क्षेत्र के भूवैज्ञानिक इतिहास को समझने के लिए महत्वपूर्ण है।"