These peaks are produced when sulfuric acid settles after volcanic eruptions or other similar events.
(These peaks; are produced; T:when sulfuric acid settles after volcanic eruptions or other similar events) (sulfuric acid; settles; T:after volcanic eruptions or other similar events)
These peaks sulfuric acid
are produced settles
T:when sulfuric acid settles after volcanic eruptions or other similar events
T:after volcanic eruptions or other similar events