Day 1 : 7th September 2025
Pre-Conference Cultural Fieldtrip
A one-full day of sightseeing, exploring Indonesian culture through visits to cultural sites, the Merapi volcano, Borobudur Temple and performing arts, aimed at fostering connections with TSOP meeting attendees.
Pre-Conference Fieldtrip will start at 07.00 AM to 06.00 PM from Hyatt Regency Yogyakarta. Detailed location can be seen in the picture below.
Destination 1 : Tlogo Muncar
Tlogo Muncar Located in Kaliurang on the southern slope of Mount Merapi, Tlogo Muncar and the nearby Plawangan Hill are not just scenic attractions—they are geological witnesses to the volcano’s dynamic history. Plawangan Hill is composed primarily of andesite lava, a volcanic rock formed from intermediate magma rich in silica. This andesitic material is a common product of Mount Merapi’s explosive eruptions. Over time, lava flows and pyroclastic deposits from past eruptions have built up the terrain, forming rugged hills and carving out features like Tlogo Muncar, a waterfall that flows seasonally through channels shaped by lava and erosion. The area is a vivid example of how volcanic hazards can give rise to striking landscapes, with fertile soils, dense vegetation, and impressive geomorphological features that continue to attract visitors, researchers, and nature lovers alike.
Destination 2 : Merapi View on Nawang Jagad
We will be greeted with breathtaking panoramic views of Mount Merapi, one of Indonesia’s most iconic volcanoes, right from the scenic highlands of Nawang Jagad. The cool mountain breeze and tranquil surroundings create the perfect atmosphere to unwind after a day of conference activities. Here, participants can enjoy a selection of refreshing local snacks and condiments while enjoys the breathtaking view. This stop offers a moment of relaxation and a chance to experience the natural beauty of Yogyakarta beyond the conference halls. It’s the ideal blend of cultural immersion and scenic retreat, making it one of the highlights of the pre-conference field trip.
Destination 3 : Ullen Sentalu Museum
Ullen Sentalu Museum conserve many collections of the era of Mataram Kingdom which was separated into 4 keraton in Solo and Yogyakarta which are Kasunanan Surakarta, Kesultanan Yogyakarta, Praja Mangkunegaran, and Kadipaten Pakualaman. The visitors can see many collections of the paint and the picture of the noble of that era. There are also the collection of Batik Solo and Yogyakarta that’s really meaningful, the collection of ancient gamelan, Hidust and Budha statue and also other heritage collection.
One of the most interesting chambers in Ullen Sentalu Museum is Poem Chamber for Tineke. Tineke is the Dutch Name of the daughter of Sunan Surakarta Pakubuwono XI. Being really broken hearted because of the man she loved where he was considered by her parents that he was not at the same level, Princesse Tineke got many love letters and poem from her siblings and friends to make her happy. You can see those letters in this room.
Destination 4 : Borrobudur Museum
The Borobudur Temple Compounds is one of the greatest Buddhist monuments in the world, and was built in the 8th and 9th centuries during the reign of the Syailendra Dynasty. The monument is located in the Kedu Valley, in the southern part of Central Java, at the centre of the island of Java, Indonesia.
The main temple is a stupa built in three tiers around a hill which was a natural centre: a pyramidal base with five concentric square terraces, the trunk of a cone with three circular platforms and, at the top, a monumental stupa. The walls and balustrades are decorated with fine low reliefs, covering a total surface area of 2,520 m2. Around the circular platforms are 72 openwork stupas, each containing a statue of the Buddha.
The vertical division of Borobudur Temple into base, body, and superstructure perfectly accords with the conception of the Universe in Buddhist cosmology. It is believed that the universe is divided into three superimposing spheres, kamadhatu, rupadhatu, and arupadhatu, representing respectively the sphere of desires where we are bound to our desires, the sphere of forms where we abandon our desires but are still bound to name and form, and the sphere of formlessness where there is no longer either name or form. At Borobudur Temple, the kamadhatu is represented by the base, the rupadhatu by the five square terraces, and the arupadhatu by the three circular platforms as well as the big stupa. The whole structure shows a unique blending of the very central ideas of ancestor worship, related to the idea of a terraced mountain, combined with the Buddhist concept of attaining Nirvana.
Day 2 : 8th September 2025
Workshop
This event will feature structured and expert-led sessions for academics and professionals, and people interested in exploring particular topics:
101 Organic Petrology by Prof. Joan Esterle
Venue: Meeting Room 1, SGLC Building, Faculty of Engineering, Universitas Gadjah Mada
Discussion Outline:
- Organic petrology course using the Diskus Student Fossil (Viewer)
- Hands-on session with selected Indonesian and Permian coal and peat samples
Critical Minerals by Prof. Shifeng Dai
Venue: Krakatau Room, Hyatt Regency
Discussion Outline:
Mineral Matter in Coal
- What is mineral matter in coal?
- Mineral matter and low-temp. ash
- Modes of occurrence
- Non-mineral inorganics
- Non-coal bands in coal seams
- Significance of mineral matter in coal
Critical Minerals in Coal
- What are critical minerals?
- Germanium in coal
- Gallium and Al in coal
- REE in coal
- Uranium in coal
- Other critical metals in coal
- Benefits and future prospects of critical minerals in coal
Unconventional Hydrocarbon by John G. Hattner
Venue: Krakatau Living Room, Hyatt Regency
Discussion Outline:
- Introduction
- Industry Definitions
- Tight Gas
- Coal Seam Gas
- Shale Oil and Gas
- Reserve Determination Methods
- Evaluation Steps and Data Requirements
- Pilots
- Resources to Reserves Maturation
- Economics
Ice Breaker
Engaging and fostering connection between TSOP member and conference attendee all around the world.
Council Meeting
A business meeting, at which time Council may present to the Members present items of business for information, recommendation, discussion or vote, planning for next TSOP meetings, elections, determination of applicant qualifications and membership, administering funds for the benefit of the Society, and any other duties required to accomplish the objectives of the Society.
Student Drink Function
A Youth TSOP member and attendee gathering to strengthening the world-wide friendship while experiencing Indonesia’s culture.
Day 3: 9th September 2025
Technical Session
The technical sessions will be held for accepted applicants by oral and poster presentations, and selected papers will be awarded on awarding night. All presenters (oral and poster) are invited to submit their papers in the International Journal of Coal Geology Special Issue of TSOP 2025.
Business Lunch
The Business Lunch provides an opportunity for participants to network in an informal setting, exchange ideas on professional collaborations, and discuss potential future projects while enjoying a shared meal.
TSOP Conference Dinner
Engaging and fostering connection between TSOP member and conference attendee all around the world.
Day 4: 10th September 2025
Technical Session
The technical sessions will be held for accepted applicants by oral and poster presentations, and selected papers will be awarded on awarding night. All presenters (oral and poster) are invited to submit their papers in the International Journal of Coal Geology Special Issue of TSOP 2025.
Closing and Awarding Session
Conference agenda will be highlighted, and we will be celebrate several presenter that will be awarded as best speaker.
Post-Conference Fieldtrip Technical Briefing
Briefing will be held to inform the details of the post-conference fieldtrip.
