FANDOM


LithologyEdit

Diorite , quartz diorite, pegmatite , plagiogranite

Stratigraphic relationsEdit

Intrudes gabbro and diabase dike complex

DistributionEdit

Balog-balog, Tarlac; Mayantoc, Tarlac

AgeEdit

Eocene

Named byEdit

Villones and others (1979)

DescriptionEdit

In the western flank of Zambales Range is a diorite complex originally called Balog-Balog Diorite by Villones and others (1979) for the diorite exposures at Balog-Balog, Tarlac. It is also well exposed at Mayantoc, Tarlac. The complex is a dike system intruding the gabbro and diabase dike swarms of the ophiolite suite. It appears to be late differentiates of the gabbro of the ophiolite and is an intrinsic part of the ophiolite complex. The Balog-Balog consists of diorite, quartz diorite, pegmatite, plagiogranite and possibly tonalite and monzonite. The diorite is fine to coarse grained and pegmatitic. The main diorite is light to dark gray, equigranular and contains abundant hornblende crystals. The quartz diorite is light colored and pinkish with crystals of free quartz and potash feldspars. The coarse crystalline pegmatite contains large euhedral crystals of hornblende in a felsic matrix.

Ad blocker interference detected!


Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.