Detailed Exploration

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Prerequisites: Stabilisation 
Detailed Exploration is akin to a second layer of the map with new dungeons, monsters, and items. But with all these new things, the requirements on explorers also become higher. 
To begin Detailed Exploration, you only need to get an area to Trusting intimacy. If you want a turn reduction of around 100-250turns, you can get all areas of an Area Group to Grade 5 Stabilisation (3 Purple Stars in map). When you're done, the 3 Stars in Map will turn to Blue for all those Areas. Then, you will automatically have lower turns for those areas. 
In the Stabilisation Article, I've covered how to go about achieving this. 
There really isn't much more to say about Detailed Exploration.
While getting min-turns might be difficult, with 1000~1100MBT Explorer you can reach around 100 turns in Scattered Mountains.
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Three main ways:
#Associations can cut down turns upto 15% by area type. VERY IMPORTANT
#Industry can cut down turns by Area Groups (from 5% in Starter's plain upto 25% in Broken Sea, etc.) VERY IMPORTANT
#Gear Refinement on proper gear (with in+built 2%+ turn reduction) can get you around 20% more reduction total.
#Stabilising an Area Group to grade 5 gives you a turn reduction of around 100-250 turns.
The 5th is not really a way... Just create fantasy explorers. They have a buttload of MBT even at Master+0 and leave everyone else in the dust.
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OUTDATED. NEEDS TO BE UPDATED.<BR />
Here are some images to give you a perspective on Detailed Exploration (avoiding putting in details like exact MBT to make it complex). 
P.S. These include effects of Industry and Association. 
For Scattered Mountains it's a bit easy. The following is a 980ish MBT elite mythic with non-upgraded gear, on an area with 91 min turns. It's a very easy area in Scattered Mountains, but 1000-1100 Mbt should be enough to explore most of it satisfactorily. 
 Forgotten City, 2nd Recommended Area Group to Stabilize
	
	
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Following table lists the important (non-tradable) materials in each Area Group.
Min MBT	Max MBT	Region 	 	 	 	 	 	
700 	950 	Eastern Field 	Immortal Leaf 	Immortal Claw 	 	 	 	
1100 	1600 	Eastern Mountains 	Immortal Cloth 	Immortal Claw 	Immortal Seed 	Immortal Mud 	Immortal Watercress 	World Tree's Sprout
1100 	1600 	Forgotten City 	Immortal Leather	Immortal Mushroom 	Immortal hair Ball	Immortal Cloth 	Immortal Dragon Fruit 	Beautiful Cup
700 	900 	Scattered Mountains 	Immortal Skin 	Immortal Plank 	 	 	 	
950 	1100 	Secret Coast 	Immortal Moss 	Immortal Seaweed 	 	 	 	
1100 	1500 	Southeastern Mountains	Immortal Moss 	Immortal Reed 	Immortal Egg 	Immortal Watercress 	Immortal Leaf 	Dignified Clam
1050 	1500 	Southern Desert 	Immortal Bone 	Immortal Reed 	Immortal Tail 	Immortal Leather 	Immortal Thornbloom 	Unidentifiable Fruit
600 	750 	Starter's Plain 	 	 	 	 	 	
950 	1200 	Trial Gorge 	Immortal Thorn 	Immortal Thornbloom 	 	 	 	
1400 	1900 	Broken Sea 	Immortal Plank 	Immortal Seaweed 	Immortal Mud 	Dignified Clam 	Magic Necklace 	Flower of Origins
1400 	1900 	Ice Mountains 	Immortal Bone 	Immortal Seed 	Immortal Egg 	Beautiful Cup 	Unmelting Snow Crystal	God's Crystal
1400 	1900 	Midnight Land 	Immortal Skin 	Immortal Mushroom 	Immortal Tail 	World Tree's Sprout 	Star of Wishes 	Smoke of Death
1500 	1900 	Red Mountain 	Immortal Thorn 	Immortal Dragon Fruit	Immortal Hair Ball	Unidentifiable Fruit	Star of Eternal Life 	Plasma