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Earth Science Week 2017: Boat Trip to Yim Tin Tsai and Sharp Island

14 October 2017
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Event type:
Field trip
Organised by:
Earth Science Week 2017
Sai Kung Public Pier
Event status:

On this field trip will you will visit a number of interesting geological stops at Yim Tin Tsai and Sharp Island, Sai Kung.  You'll be able to see outcrops of volcanic breccias, flow banded rhyolites and dykes, pertaining to the boundary of High Island Caldera, on Sharp Island. You'll then visit a newly-identified breccia pipe at Yim Tin Tsai, and its significance regarding local hydrothermal events will be discussed. If there is time, the boat will cruise along some coastal sections with scenic jointed columns in Port Shelter. Return to Sai Kung by about 4 pm.
  • This event is subjected to weather conditions and may be cancelled in the event of adverse weather.
  • Please bring enough drinking water and pack lunch.
  • Participants could have lunch at a local restaurant in Yim Tin Tsai. 
  • Please wear proper hiking boots and sportswear.
  • Please note that neither the Society nor the parties concerned accept any liability in connection with the event.
Sai Kung Public Pier
9:30 am to 4:30 pm
HK$200 (Fellows of GSL and full-time geology students)
HK$300 (Non-members)


How to book:
Contact Miss Trudy Kwong at