Acknowledgments

The Saudi Society for Geosciences (SSG) would like to thank Crown Prince/His Royal Highness prince Sultan Ibn Abdulaziz for his financial support and to His Royal Highness prince Salman Ibn Abdulazziz, the governor of Riyadh for his auspices of the meeting as well as to His Royal Highness prince Abdulaziz Bin Salman for his annual support to the SSG .

 We also would like to extend our thanks and gratitude to the Rector of King Saud University, his Excellency Prof. Abdullah Al-Othman for his support and to Prof. Mansour Al-Saeed, KSU Vice rector for his following up and encouragement.

 Special thanks to King Abdulaziz City for Science & Technology, Saudi Aramco, Ma'aden, Al-Obaikan Publishing for their unlimited financial support. Finally, we thank all organizing, scientific, and exhibition committees for their help in succeeding the meeting and our thanks also extend to faculty members, staff and students of geology Dept. for their support and arrangements.