Sentence examples for major eruption cycle from inspiring English sources

As a first major eruption cycle, a sequence of lower members (A1, S1, A2, S2, and A3) predates the intrusion of the Cheogwari granodiorite whose hornblende K-Ar age is 76.3 ± 11.7 Ma (Reedman et al. 1989).

To put it differently, the two major eruption cycles were separated by the intrusion of the Cheogwari granodiorite (Reedman et al. 1989).

The A4 member is a product of the second eruption cycle, and the S3 member represents sedimentations that occurred between the two major eruption cycles (Reedman et al. 1989; Park 1990).

Despite limited success, U-Pb zircon ages of A1 (72.8 ± 1.7 Ma andd A4 (67.7 ± 2.1 Ma) confirm that the two major eruption cycles of the CVF were separated by the intrusion of the Cheogwari granodiorite (hornblende K-Ar age of 76.3 ± 11.7 Ma) and the magmatic activity of the CVF was terminated with the intrusion of the Gadaeri granite (biotite K-Ar age of 63.9 ± 1.8 Ma). Figure 3 Ages of CVF.

This point is further illustrated in Figure 26, which shows the source locations of the 55 major eruptions (≥M5.0) of cycle 23 and the ones with 20 large SEP events.

Phreatic eruptions often occur during prolonged periods of non-magmatic hydrothermal unrest (e.g., Pisciarelli, Campi Flegrei), and can occur as a single, major event, or as minor events within a phreatic eruption cycle (Rouwet et al. [2014]).

This frequency of minor eruptive activity proved to be a precursor for a major eruption.

The single eruption cycle at Crystal geyser lasted over four days and was composed of four parts: Minor Eruption (mEP), Major Eruption (MEP), Aftershock Eruption (Ae) and Recharge (R).

Mount Vesuvius has erupted a dozen times in the last 200 years, the last major eruption in 1944.

Its last major eruption occurred in 1992.

The last major eruption was more than 200 years ago.