Can't remove Core Storage from hard drive

Question

I wanted to erase a backup drive and start over again but somehow it's gotten converted to "Core Storage" I'm told.
I managed to erase the drive by first listing the Core Storage devices, using the following command in the OSX Terminal:
diskutil cs list
Then erasing the drive:
diskutil cs delete "Backup2"
This made everything look OK in Disk Utility, because now the drive appears as having a volume in addition to the drive icon, and there are also 4 tabs available (First Aid, Erase, Partition, RAID, Restore), but if I erase the drive something strange happens: it says "Switching disk1s1 to Core Storage", and after that the two drive icons in Disk Utility get the same name (all my other drives show an icon with the drive brand/model while the second icon shows the volume name). And the main drive icon only has 2 options now: First Aid and Partition. The volume icon has 3 options in DIsk Utility: First Aid, Erase, Restore.
The obvious thing to do at this stage is select "Erase", but this only results in the volume icon changing its name separately from the drive itself.
I've also tried booting with my OSX 10.6 installation DVD and erasing the drive from there, but the result is the same when I try to erase it once again. Seems like my OSX has somehow decided that this specific drive must be a Core Storage device regardless of what I've done to the actual drive itself.
What do I need to do in order to make the drive "normal" again? I'm using OSX 10.9.5.

Answer 1

Kappy: thanks, but I have to explain that I'm not in the process of upgrading from OSX 10.6 Snow Leopard (I grabbed the OSX 10.6 installation DVD because it allows me to boot from another media than the computer's boot drive -Mavericks doesn't come on a DVD of course and I haven't taken the time to figure out how to install it on a USB thumb drive).
I actually did a clean install (backup everything, reformat the drive, install OSX from scratch) of OSX 10.9 Mavericks recently, and the reason for reformatting the problematic drive in the first place was to do a completely new backup since I don't want to risk keeping keep bits of 10.6 mixed in there with 10.9.
I somehow messed up the drive which made it Core Storage and now it refuses to act as a normal drive.
My Mac consists of several drives where the abovementioned drive acts as a bootable backup.
Keg55: Thanks for your suggestions but I'm still running into the same issue as before: after doing the terminal commands my drive seems fine, but when I open Disk Utility (DU) and format ("erase") the drive gets converted back into Core Storage. I erase it in order to test if things have really gotten back to normal or if the Core Storage thingy still sticks with my system somehow (which it does). I'd never even heard of Core Storage until now (and still don't understand what it really is as most of the documentation I've found is highly technical), but could it be that OSX 10.9 Mavericks is supposed to do this while 10.6 Snow Leopard isn't (hence what Kappy is saying in the last part of the reply above about Yosemite creating Core Storage volumes automatically? Is this what applies here, or have I misunderstood?
OK, let me explain what happens step by step... The goal of course is to format the drive so as to act as a normal "Mac OS extended (journaled)" drive (as I said I don't even know what Core Storage is and don't know why I would be wanting this), so here goes....
1) At the first stage I have the drive freshly deleted using the diskutil cs delete LVG_UUID command (diskutil cs delete "volume_group_name" appears to be doing the same thing), so it's just like my other drives as far as I can see in DU (showing the drive brand/model and a partition icon underneath as seen in the screenshot below).
2) Now I want to verify if my drive has really become "normal" again or if it acts up once more by becoming a Core Storage drive again.
I click on the drive's (not its partition) icon in DU, select the "Erase" tab and finally press the erase button.
3) After pressing the erase button, messages pop up at the bottom part of DU very quickly. Luckily I can do screenshots faster than I can read, so here's what I've captured DU telling me. First it's converting the drive to Core Storage:
4) next it switching the drive to Core storage:
5) and finally it's formatting the file system for logical volume (whatever that means):
and as you can see in the top left corner the drive now only shows a single icon (unlike every time I've formatted a drive in the past it shows the drive and a partition icon, where the drive icon is followed by the drive's brand/model name).
So what's going on here and why can't I get my drive back to normal when erasing it?