i left this a couple of days to see if someone else might come up with a wonder book of eco-detailing but i think it unlikely that one exists. what i suggest you do is go to the building centre in store street and the riba bookshop in portland place where you will find literally dozens of books which may be of some help to you particular situation. if you can not get to london they both have websites/mail order but personally i like to look through the book first before i part with the cash! the bre at watford also do some useful publications. however, the most useful source of details is probably architectural periodicals such as the architects journal and architecture today both of which do special technical supplements on eco-design but are only available by subscription or at specialist libraries.
what actually intrigues me is what you might consider to be eco details that are so very different to what we might now call traditional construction? ....unless of course you are building something out of old car tyres or the like!

details rarely apply in a standardised way unless you are into vlume building, leading to endless variations but on the other hand there are really only 3 conditions that have to be dealt with most of the time: ground to wall junction, roof to wall junction (plus a high point if it slopes), and openings in walls.
can you be more specific about what details you want/
have you heard of robust details (to smooth building regs approval), or do you want something wacky?