I would have to presume it means quartzification, the про either being an actual part of the word or indicating throughout
Geological Survey bulletin - Issues 1559-1564 - Page 53 - Google Books Result
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Geological Survey (U.S.) - 1986 - Science
SUMMARY I believe it is reasonable to conclude that the large alteration systems in the Carolina slate belt with widespread quartzification and development of ...
Sedimentary Geology: Sedimentary Basins, Depositional ... - Page 445 - Google Books Result
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Bernard Biju-Duval - 2002 - Science
Cements will vary widely depending on the rock and fluids: silicification of sands and then of sandstones; quartzification by development of a siliceous cement; ...

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Note added at 3 hrs (2013-02-07 23:34:03 GMT)
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I feel quite sure it's quartzification and the "pro" is added to distinguish it from:
Кварцевание — Кварцевание процесс обработки (обеззараживания) помещения (воздуха) ультрафиолетовым излучением кварцевой лампы. В результате кварцевания воздух обогащается озоном, который, в свою очередь, также дезинфицирует воздух. Озон ядовит, поэтому… … Википедия

кварцевание — 1) General subject: UV Sterilisation of a dentist s treatment room (in Russia entire treatment rooms must be flooded with high intensity UV light to sterilise it 3 times per day) 2) Medicine: quartz treatment … Универсальный русско-английский слова.

I would feel comfortable in using quartzification, and I've translated geological subjects for 52 years.